Discussion:
[GTALUG] Messages are bouncing
Lennart Sorensen via talk
2018-07-25 15:49:24 UTC
Permalink
I don't think I have received any messages from the list in about 2 weeks.
The only thing I have gotten is a message saying I have been removed due
to bounces (strangely that one didn't bounce). No idea why that would
happen since other things work fine, including lkml which is notorious
for hating bouncing emails.

Anyone have any idea what could be going on?
--
Len Sorensen
Alex Volkov via talk
2018-07-25 15:53:10 UTC
Permalink
Hey Lennart,

That's spamhaus blacklisting us occasionally, your email service and
about five other people (including myself) use spamhaus as a spam
filtering service.

For some reason the messages coming from an IPv6 address to an IPv6
address have much higher chance of getting blacklisted.

Every-so-often I go to spamhaus and request delisting, I would also
manually clear all the bounced accounts, but sometimes I forget to do that.

Alex.
Post by Lennart Sorensen via talk
I don't think I have received any messages from the list in about 2 weeks.
The only thing I have gotten is a message saying I have been removed due
to bounces (strangely that one didn't bounce). No idea why that would
happen since other things work fine, including lkml which is notorious
for hating bouncing emails.
Anyone have any idea what could be going on?
---
Talk Mailing List
tal
Lennart Sorensen via talk
2018-07-25 16:03:19 UTC
Permalink
Post by Alex Volkov via talk
Hey Lennart,
That's spamhaus blacklisting us occasionally, your email service and about
five other people (including myself) use spamhaus as a spam filtering
service.
For some reason the messages coming from an IPv6 address to an IPv6 address
have much higher chance of getting blacklisted.
Every-so-often I go to spamhaus and request delisting, I would also manually
clear all the bounced accounts, but sometimes I forget to do that.
Oh joy. Usually IPv6 is a good thing, I guess sometimes it isn't.
--
Len Sorensen
James Knott via talk
2018-07-25 15:53:38 UTC
Permalink
Let me know if you don't receive this message.  ;-)


I sent it to both the list and you directly, so you can see if it got
through the list.
Post by Lennart Sorensen via talk
I don't think I have received any messages from the list in about 2 weeks.
The only thing I have gotten is a message saying I have been removed due
to bounces (strangely that one didn't bounce). No idea why that would
happen since other things work fine, including lkml which is notorious
for hating bouncing emails.
Anyone have any idea what could be going on?
---
Talk Mailing List
***@gtalug.org
https://
Lennart Sorensen via talk
2018-07-25 16:03:44 UTC
Permalink
Post by James Knott via talk
Let me know if you don't receive this message.  ;-)
I sent it to both the list and you directly, so you can see if it got
through the list.
Well I did get this one.
--
Len Sorensen
---
Talk Mailing List
talk@
Alex Volkov via talk
2018-07-25 16:06:23 UTC
Permalink
We also have a web interface for mailman, so you can check if you're
messages are showing up there, since the default mailing list settings
is not to receive your own emails.

https://gtalug.org/pipermail/talk/
Post by James Knott via talk
Let me know if you don't receive this message.  ;-)
I sent it to both the list and you directly, so you can see if it got
through the list.
Post by Lennart Sorensen via talk
I don't think I have received any messages from the list in about 2 weeks.
The only thing I have gotten is a message saying I have been removed due
to bounces (strangely that one didn't bounce). No idea why that would
happen since other things work fine, including lkml which is notorious
for hating bouncing emails.
Anyone have any idea what could be going on?
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
***@gtalug.org
https://gtalug.org/mailman/listi
ac via talk
2018-07-26 07:06:16 UTC
Permalink
Hi,

There seems to be many people using non blocking RBL for DROP?

Alex, Instead of using that specific spamhaus DNSBL for DROP you should
rather use it for scoring?

An example of a DROP RBL is chronic webiron.com and dnsbl.ascams.com
these you can use for DROP?

Will it not be better to add scoring to sa and then to add numeric values?

hth

Andre


On Wed, 25 Jul 2018 12:06:23 -0400
Post by Alex Volkov via talk
We also have a web interface for mailman, so you can check if you're
messages are showing up there, since the default mailing list
settings is not to receive your own emails.
https://gtalug.org/pipermail/talk/
Post by James Knott via talk
Let me know if you don't receive this message.  ;-)
I sent it to both the list and you directly, so you can see if it
got through the list.
Post by Lennart Sorensen via talk
I don't think I have received any messages from the list in about
2 weeks. The only thing I have gotten is a message saying I have
been removed due to bounces (strangely that one didn't bounce).
No idea why that would happen since other things work fine,
including lkml which is notorious for hating bouncing emails.
Anyone have any idea what could be going on?
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
***@gtalug.org
https://
Alex Volkov via talk
2018-07-26 18:23:26 UTC
Permalink
Oh, it's not the messages that list receives that get filtered out, it's
when mailman sends out list to the recipients, some who have spamhaus
and running on an IPv6 port get mailing list messages filtered.

We could disable IPv6 on our end, but it just feels wrong to me.

Here's the error message I'm getting on my personal email server

<***@flamy.ca>: host mail.flamy.ca[2600:3c03:e000:173::1] said: 554
5.7.1 Service unavailable; Client host [2600:3c03::f03c:91ff:fe50:ea0a]
blocked using sbl.spamhaus.org;https://www.spamhaus.org/sbl/query/SBLCSS
(in reply to RCPT TO command)


I believe the following hosts have similar settings to mine --

csclub.uwaterloo.ca
vex.net

I believe there are 7 people including myself, that get routinely affected by the issue.
Post by ac via talk
Hi,
There seems to be many people using non blocking RBL for DROP?
Alex, Instead of using that specific spamhaus DNSBL for DROP you should
rather use it for scoring?
An example of a DROP RBL is chronic webiron.com and dnsbl.ascams.com
these you can use for DROP?
Will it not be better to add scoring to sa and then to add numeric values?
hth
Andre
On Wed, 25 Jul 2018 12:06:23 -0400
Post by Alex Volkov via talk
We also have a web interface for mailman, so you can check if you're
messages are showing up there, since the default mailing list
settings is not to receive your own emails.
https://gtalug.org/pipermail/talk/
Let me know if you don't receive this message.  ;-)
I sent it to both the list and you directly, so you can see if it
got through the list.
Post by Lennart Sorensen via talk
I don't think I have received any messages from the list in about
2 weeks. The only thing I have gotten is a message saying I have
been removed due to bounces (strangely that one didn't bounce).
No idea why that would happen since other things work fine,
including lkml which is notorious for hating bouncing emails.
Anyone have any idea what could be going on?
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
ac via talk
2018-07-27 04:12:58 UTC
Permalink
mailmain includes the receiving IP number, irrespective of whether it
is ipv6 or ipv4, it is not an ipv6 or ipv54 issue :)

it is because 2600:3c03:e000:173::1 is in an abuse range. (probably
because of the snowshoe from linode)

if mail.flamy.ca was an ipv4 that was also abusive or non responsive to
abuse - the problem would be the same...

the list should probably also be using the spamhaus 'drop' rbl..
but you are not because your range is listed? :)

the list ipv4 is nice and clean:
http://multirbl.valli.org/lookup/69.164.222.247.html - and the specific
ipv6 (2600:3c03:e000:173::1) is also clean, the range is in a 'drop'
range.... - as ipv6 starts becoming more common, many ipv6 email
servers would have to get better hosting / ip ranges, if they want to
send email reliably - as the ipv6 spectrum is too large to function
easily on the same basis as ipv4...

On Thu, 26 Jul 2018 14:23:26 -0400
Post by Alex Volkov via talk
Oh, it's not the messages that list receives that get filtered out,
it's when mailman sends out list to the recipients, some who have
spamhaus and running on an IPv6 port get mailing list messages
filtered.
We could disable IPv6 on our end, but it just feels wrong to me.
Here's the error message I'm getting on my personal email server
said: 554 5.7.1 Service unavailable; Client host
[2600:3c03::f03c:91ff:fe50:ea0a] blocked using
sbl.spamhaus.org;https://www.spamhaus.org/sbl/query/SBLCSS (in reply
to RCPT TO command)
I believe the following hosts have similar settings to mine --
csclub.uwaterloo.ca
vex.net
I believe there are 7 people including myself, that get routinely affected by the issue.
Post by ac via talk
Hi,
There seems to be many people using non blocking RBL for DROP?
Alex, Instead of using that specific spamhaus DNSBL for DROP you
should rather use it for scoring?
An example of a DROP RBL is chronic webiron.com and dnsbl.ascams.com
these you can use for DROP?
Will it not be better to add scoring to sa and then to add numeric values?
hth
Andre
On Wed, 25 Jul 2018 12:06:23 -0400
Post by Alex Volkov via talk
We also have a web interface for mailman, so you can check if
you're messages are showing up there, since the default mailing
list settings is not to receive your own emails.
https://gtalug.org/pipermail/talk/
Post by James Knott via talk
Let me know if you don't receive this message.  ;-)
I sent it to both the list and you directly, so you can see if it
got through the list.
Post by Lennart Sorensen via talk
I don't think I have received any messages from the list in about
2 weeks. The only thing I have gotten is a message saying I have
been removed due to bounces (strangely that one didn't bounce).
No idea why that would happen since other things work fine,
including lkml which is notorious for hating bouncing emails.
Anyone have any idea what could be going on?
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
***@gtalug.org
https://gtalug.org/mailman/l
Bob Jonkman via talk
2018-07-27 04:23:50 UTC
Permalink
This seems to describe a problem where the recipient's mail service
subscribes to a spam blocklist that is incorrectly blocking GTALUG.

This is not GTALUG's problem; the recipients not receiving mail should
complain to their mail provider to use a better blocklist. Or perhaps
those recipients should switch to a different mail provider that doesn't
use that blocklist. Selfhosting springs to mind...

Alex shouldn't have to contact every poorly configured blocklist when
recipient mail providers choose to use those poorly configured
blocklists. Of course, when the recipients' mail provider doesn't give
any indication to the recipient that their mail is being blocked, it's
difficult for the recipient to know they're missing mail. And if mail
from talk-***@gtalug.org is also blocked, then it's impossible for the
list owner to let the recipient know their mail is bouncing.

--Bob, who is experiencing such problems with the lists he manages.
Post by Alex Volkov via talk
Oh, it's not the messages that list receives that get filtered out, it's
when mailman sends out list to the recipients, some who have spamhaus
and running on an IPv6 port get mailing list messages filtered.
We could disable IPv6 on our end, but it just feels wrong to me.
Here's the error message I'm getting on my personal email server
    5.7.1 Service unavailable; Client host [2600:3c03::f03c:91ff:fe50:ea0a]
    blocked using
sbl.spamhaus.org;https://www.spamhaus.org/sbl/query/SBLCSS
    (in reply to RCPT TO command)
I believe the following hosts have similar settings to mine --
csclub.uwaterloo.ca
vex.net
I believe there are 7 people including myself, that get routinely affected by the issue.
Post by ac via talk
Hi,
There seems to be many people using non blocking RBL for DROP?
Alex, Instead of using that specific spamhaus DNSBL for DROP you should
rather use it for scoring?
An example of a DROP RBL is chronic webiron.com and dnsbl.ascams.com
these you can use for DROP?
Will it not be better to add scoring to sa and then to add numeric values?
hth
Andre
On Wed, 25 Jul 2018 12:06:23 -0400
Post by Alex Volkov via talk
We also have a web interface for mailman, so you can check if you're
messages are showing up there, since the default mailing list
settings is not to receive your own emails.
https://gtalug.org/pipermail/talk/
Let me know if you don't receive this message.  ;-)
I sent it to both the list and you directly, so you can see if it
got through the list.
Post by Lennart Sorensen via talk
I don't think I have received any messages from the list in about
2 weeks. The only thing I have gotten is a message saying I have
been removed due to bounces (strangely that one didn't bounce).
No idea why that would happen since other things work fine,
including lkml which is notorious for hating bouncing emails.
Anyone have any idea what could be going on?
 
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
--
Bob Jonkman <***@sobac.com> Phone: +1-519-635-9413
SOBAC Microcomputer Services http://sobac.com/sobac/
Software --- Office & Business Automation --- Consulting
GnuPG Fngrprnt:04F7 742B 8F54 C40A E115 26C2 B912 89B0 D2CC E5EA
ac via talk
2018-07-27 05:45:26 UTC
Permalink
not really.

the polar other side of your opinion is my opinion :)

people supporting and paying money to resource whores who also are non
responsive to abuse complaints and whom also may host criminals and
other scumbags deserve to have their email refused :)

the days of 'bullet proof' hosting are nearing the end as many mail
server admins are simply tired of constantly trying to do battle with
snowshoe and other rubbish.

of course, again, best practise is not to 'drop' but to score email
incoming from abusive hosts and IP numbers as well as bad places on
the net, and at first mark them as spam, report that spam and then,
eventually, these resources will also end up in a permanent drop
dnsbl :)

and;
Post by Bob Jonkman via talk
--Bob, who is experiencing such problems with the lists he manages.
does your list require people to opt in? or are people simply added and
then expected to unsubscribe?

see, sometimes 'people' are not real people, they could be data in
stolen databases, they could be submitted by devious 3rd parties to
cause your list harm, there could be so many issues...

If you are just adding email addresses to your list :) - then you will
find yourself experiencing issues if something goes wrong and you are
reported somewhere...

On Fri, 27 Jul 2018 00:23:50 -0400
Post by Bob Jonkman via talk
This seems to describe a problem where the recipient's mail service
subscribes to a spam blocklist that is incorrectly blocking GTALUG.
This is not GTALUG's problem; the recipients not receiving mail should
complain to their mail provider to use a better blocklist. Or perhaps
those recipients should switch to a different mail provider that
doesn't use that blocklist. Selfhosting springs to mind...
Alex shouldn't have to contact every poorly configured blocklist when
recipient mail providers choose to use those poorly configured
blocklists. Of course, when the recipients' mail provider doesn't
give any indication to the recipient that their mail is being
blocked, it's difficult for the recipient to know they're missing
it's impossible for the list owner to let the recipient know their
mail is bouncing.
--Bob, who is experiencing such problems with the lists he manages.
Post by Alex Volkov via talk
Oh, it's not the messages that list receives that get filtered out,
it's when mailman sends out list to the recipients, some who have
spamhaus and running on an IPv6 port get mailing list messages
filtered.
We could disable IPv6 on our end, but it just feels wrong to me.
Here's the error message I'm getting on my personal email server
    5.7.1 Service unavailable; Client host
[2600:3c03::f03c:91ff:fe50:ea0a] blocked using
sbl.spamhaus.org;https://www.spamhaus.org/sbl/query/SBLCSS
    (in reply to RCPT TO command)
I believe the following hosts have similar settings to mine --
csclub.uwaterloo.ca
vex.net
I believe there are 7 people including myself, that get routinely
affected by the issue.
Post by ac via talk
Hi,
There seems to be many people using non blocking RBL for DROP?
Alex, Instead of using that specific spamhaus DNSBL for DROP you
should rather use it for scoring?
An example of a DROP RBL is chronic webiron.com and
dnsbl.ascams.com these you can use for DROP?
Will it not be better to add scoring to sa and then to add numeric values?
hth
Andre
On Wed, 25 Jul 2018 12:06:23 -0400
Post by Alex Volkov via talk
We also have a web interface for mailman, so you can check if
you're messages are showing up there, since the default mailing
list settings is not to receive your own emails.
https://gtalug.org/pipermail/talk/
Post by James Knott via talk
Let me know if you don't receive this message.  ;-)
I sent it to both the list and you directly, so you can see if it
got through the list.
Post by Lennart Sorensen via talk
I don't think I have received any messages from the list in
about 2 weeks. The only thing I have gotten is a message saying
I have been removed due to bounces (strangely that one didn't
bounce). No idea why that would happen since other things work
fine, including lkml which is notorious for hating bouncing
emails.
Anyone have any idea what could be going on?
 
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
***@gtalu
ac via talk
2018-07-27 06:33:03 UTC
Permalink
I am so sorry, I made a stupid assumption.

by simply stating "not really" I assumed that people would understand
that this means that technically
Post by ac via talk
Post by Bob Jonkman via talk
This seems to describe a problem where the recipient's mail service
subscribes to a spam blocklist that is incorrectly blocking GTALUG.
this is NOT the case...

It is not GTALUG that is blocked... GTALUG is completely clean and in a
clean IP range.

mailman includes the relay IP number, in the headers, so the incoming
email server checks all "Received: from " against whatever RBL dnsbl, etc.

So, if the person/ip/sender, that 'sent' to the GTALUG mailing list, ip
no is listed, THEN there are issues in receiving email...(by whatever
recipient email server)

so, sorry about that :(

for the rest, I guess I could also elaborate a lot more if anyone is interested?

On Fri, 27 Jul 2018 07:45:26 +0200
Post by ac via talk
not really.
the polar other side of your opinion is my opinion :)
people supporting and paying money to resource whores who also are non
responsive to abuse complaints and whom also may host criminals and
other scumbags deserve to have their email refused :)
the days of 'bullet proof' hosting are nearing the end as many mail
server admins are simply tired of constantly trying to do battle with
snowshoe and other rubbish.
of course, again, best practise is not to 'drop' but to score email
incoming from abusive hosts and IP numbers as well as bad places on
the net, and at first mark them as spam, report that spam and then,
eventually, these resources will also end up in a permanent drop
dnsbl :)
and;
Post by Bob Jonkman via talk
--Bob, who is experiencing such problems with the lists he manages.
does your list require people to opt in? or are people simply added
and then expected to unsubscribe?
see, sometimes 'people' are not real people, they could be data in
stolen databases, they could be submitted by devious 3rd parties to
cause your list harm, there could be so many issues...
If you are just adding email addresses to your list :) - then you will
find yourself experiencing issues if something goes wrong and you are
reported somewhere...
On Fri, 27 Jul 2018 00:23:50 -0400
Post by Bob Jonkman via talk
This seems to describe a problem where the recipient's mail service
subscribes to a spam blocklist that is incorrectly blocking GTALUG.
This is not GTALUG's problem; the recipients not receiving mail
should complain to their mail provider to use a better blocklist.
Or perhaps those recipients should switch to a different mail
provider that doesn't use that blocklist. Selfhosting springs to
mind...
Alex shouldn't have to contact every poorly configured blocklist
when recipient mail providers choose to use those poorly configured
blocklists. Of course, when the recipients' mail provider doesn't
give any indication to the recipient that their mail is being
blocked, it's difficult for the recipient to know they're missing
it's impossible for the list owner to let the recipient know their
mail is bouncing.
--Bob, who is experiencing such problems with the lists he manages.
Post by Alex Volkov via talk
Oh, it's not the messages that list receives that get filtered
out, it's when mailman sends out list to the recipients, some who
have spamhaus and running on an IPv6 port get mailing list
messages filtered.
We could disable IPv6 on our end, but it just feels wrong to me.
Here's the error message I'm getting on my personal email server
mail.flamy.ca[2600:3c03:e000:173::1] said: 554
    5.7.1 Service unavailable; Client host
[2600:3c03::f03c:91ff:fe50:ea0a] blocked using
sbl.spamhaus.org;https://www.spamhaus.org/sbl/query/SBLCSS
    (in reply to RCPT TO command)
I believe the following hosts have similar settings to mine --
csclub.uwaterloo.ca
vex.net
I believe there are 7 people including myself, that get routinely
affected by the issue.
Post by ac via talk
Hi,
There seems to be many people using non blocking RBL for DROP?
Alex, Instead of using that specific spamhaus DNSBL for DROP you
should rather use it for scoring?
An example of a DROP RBL is chronic webiron.com and
dnsbl.ascams.com these you can use for DROP?
Will it not be better to add scoring to sa and then to add numeric values?
hth
Andre
On Wed, 25 Jul 2018 12:06:23 -0400
Post by Alex Volkov via talk
We also have a web interface for mailman, so you can check if
you're messages are showing up there, since the default mailing
list settings is not to receive your own emails.
https://gtalug.org/pipermail/talk/
Post by James Knott via talk
Let me know if you don't receive this message.  ;-)
I sent it to both the list and you directly, so you can see if
it got through the list.
Post by Lennart Sorensen via talk
I don't think I have received any messages from the list in
about 2 weeks. The only thing I have gotten is a message
saying I have been removed due to bounces (strangely that one
didn't bounce). No idea why that would happen since other
things work fine, including lkml which is notorious for
hating bouncing emails.
Anyone have any idea what could be going on?
 
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
https://gtalug.org/mailman/listinfo/talk
---
Talk Mailing List
***@gtalug.org
https://gtalug.org/mailman/listi

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