[Mailman-Users] Fatal Bounces ONLY on ATT (Bellsouth).NET

2021-03-13 Thread steve lund
Hello,

It appears to be starting again for our list. Fatal bounces but ONLY on
ATT.net. Here is what Google says:

DMARC and DKIM passed. However, this may have been the bounce message to me.

Below is the bounce message to me. I see a DKIM Pass and a DKIM Fail. Can
anyone shed any other light as to why these ATT addresses are ALL failing?

Thanks,
Steve

=

Delivered-To: slund...@gmail.com
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d=google.com; s=arc-20160816;
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 uejw==
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d=google.com; s=arc-20160816;
h=sender:errors-to:list-id:precedence:date:message-id:mime-version:to
 :from:subject:dkim-signature:delivered-to:dkim-signature;
bh=+KoYLe/u2BsMykVMJTWEbIVkHJSjKpwBokxJFqNz2Rc=;
b=tRtbwMpdiAAHapKX3NhVtKYYQo5jZrWdMYymgFmWmi8XIh9w7Nv3slRD4C1x15xkI8
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 7vMg==
ARC-Authentication-Results: i=1; mx.google.com;
   dkim=pass header.i=@msinglinks.org header.s=201912 header.b=Opkav72l;
   dkim=fail header.i=@msinglinks.org header.s=201912 header.b=luOWzzsL;
   spf=pass (google.com: domain of
mailman-boun...@lists.deltaforce.net designates 45.33.97.191 as
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   dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=lists.msinglinks.org
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[Mailman-Users] Re: Fatal Bounces ONLY on ATT (Bellsouth).NET

2021-03-13 Thread Mark Sapiro
On 3/12/21 1:39 PM, steve lund wrote:
> Hello,
> 
> It appears to be starting again for our list. Fatal bounces but ONLY on
> ATT.net. Here is what Google says:
...

> <...@att.net>: host ff-ip4-mx-vip1.prodigy.net[144.160.159.21] said: 553
> 5.3.0 flpd599 DNSBL:RBL 521< 45.33.97.191 >_is_blocked.For assistance
> forward this error to abuse_...@abuse-att.net (in reply to MAIL FROM
> command)


It may be a coincidence, but I started seeing the same bounces on one of
my servers (thankfully not mail.python.org or lists.mailman3.org) about
two days ago.

ATT is blocking your IP.

In my case, I sent this to abuse_...@abuse-att.net.

> You are blocking all mail from IP 138.68.52.125 per this log message.
> 
> Mar 12 09:59:32 grizz postfix/smtp[10965]: D0CAF1F8123:
> to=<...>,
> relay=ff-ip4-mx-vip2.prodigy.net[144.160.159.22]:25, delay=0.38,
> delays=0.1/0/0.27/0.01, dsn=5.3.0, status=bounced (host
> ff-ip4-mx-vip2.prodigy.net[144.160.159.22] said: 553 5.3.0 flph832
> DNSBL:RBL 521< 138.68.52.125 >_is_blocked.For assistance forward this
> error to abuse_...@abuse-att.net (in reply to MAIL FROM command))
> 
> This mail is from an opt-in email discussion list or other business
> related mail from a bicycle club. We do not send spam or unsolicited
> commercial email. Please remove this block.


I received this reply.

> Thank you for contacting the AT&T Postmaster Staff.
> 
> We investigate every block report and removal request we 
> receive and take the appropriate action, of which you will
> be notified. It is never the intention of the AT&T 
> Postmaster staff to block legitimate mail. It is a rare 
> but unfortunate occurrence that legitimate correspondence 
> is blocked as a result of careful yet vigorous anti-spam 
> and abuse countermeasures. We would like to rectify your 
> mail delivery issue as soon as possible with your help. By
> emailing this address you have already taken the first 
> step in resolving this issue.
> 
> When the AT&T Postmaster staff receives a request with the
> needed information requests are evaluated. If granted, the
> block will be removed within 24 to 48 hours. There are 
> situations when mail interruptions or blocks are in place 
> outside the AT&T domain. In these cases, we will attempt 
> to make contact with the party initiating the block and 
> seek a resolution. If there is no change after 48 hours 
> please include the current and complete error message that
> you are receiving in your follow up email to 
> .
> 
> For more information about email best practices and mail 
> delivery issues visit:
> 
> https://www.att.com/esupport/postmaster/
> 
> We reserve the right to deny or turn down a request if our
> research shows the requested IP(s) being a violator of 
> SPAM or abuse policies currently, or in the past.
> 
> We at AT&T thank you for your assistance in reporting this 
> matter and appreciate your patience while we investigate 
> this issue.   
> 
> AT&T Postmaster Staff

As of 03:30 PST this morning the block had not been removed.

-- 
Mark Sapiro The highway is for gamblers,
San Francisco Bay Area, Californiabetter use your sense - B. Dylan
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[Mailman-Users] Re: Fatal Bounces ONLY on ATT (Bellsouth).NET

2021-03-13 Thread Brian Carpenter

On 3/13/21 11:00 AM, Mark Sapiro wrote:

As of 03:30 PST this morning the block had not been removed.

-- Mark Sapiro  The highway is for gamblers, San 
Francisco Bay Area, California better use your sense - B. Dylan


There is definitely an increase in AT&T blocking mail servers recently. 
I had about 5 out of the blue get blocked. Too date, AT&T has never 
presented any evidence for their decision to block one our IP addresses. 
I do know they block new server IPs automatically. The real problem here 
is how long they are taking to respond to block removal requests. Out of 
the 5 I had to deal with recently, one of them took 10 DAYS for them to 
remove the block. I am assuming the reason behind this lengthy delay is 
a deluge of block removal requests that they are having to deal with.


--
Brian Carpenter
Harmonylists.com
Emwd.com
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[Mailman-Users] Re: Fatal Bounces ONLY on ATT (Bellsouth).NET

2021-03-13 Thread Mark Sapiro
On 3/13/21 10:33 AM, Brian Carpenter wrote:
> 
> Too date, AT&T has never
> presented any evidence for their decision to block one our IP addresses.


My experience in dealing with blocks by ATT, Microsoft and other ISPs is
that they (eventually) remove the blocks, but never once have they
provided me with any evidence of the alleged problem email.

-- 
Mark Sapiro The highway is for gamblers,
San Francisco Bay Area, Californiabetter use your sense - B. Dylan
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[Mailman-Users] Re: Fatal Bounces ONLY on ATT (Bellsouth).NET

2021-03-13 Thread Keith Seyffarth

On 3/13/21 11:51 AM, Mark Sapiro wrote:

On 3/13/21 10:33 AM, Brian Carpenter wrote:


Too date, AT&T has never
presented any evidence for their decision to block one our IP addresses.



My experience in dealing with blocks by ATT, Microsoft and other ISPs is
that they (eventually) remove the blocks, but never once have they
provided me with any evidence of the alleged problem email.


I have seen that as well, both with mailing lists and other emails. The 
best I can get from anyone there is, "we wouldn't have blocked it if 
there weren't an issue," but that doesn't tell me what the issue was (or 
is) so I can address the issue (assuming there actually was one). And 
even with my IP addresses set up in their tracking and reporting systems 
and affiliated with an administrative email address, I have never 
received any reports or warnings that something was about to happen. 
Instead I get complaints about bounces or non-delivery from my clients...


--


Keith Seyffarth
mailto:w...@weif.net
https://www.weif.net/ - Home of the First Tank Guide!
https://www.rpgcalendar.net/ - the Montana Role-Playing Calendar

http://www.miscon.org/ - Montana's Longest Running Science Fiction 
Convention

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[Mailman-Users] Re: Fatal Bounces ONLY on ATT (Bellsouth).NET

2021-03-13 Thread Mark Sapiro
On 3/13/21 12:17 PM, Keith Seyffarth wrote:
> On 3/13/21 11:51 AM, Mark Sapiro wrote:
>>
>> My experience in dealing with blocks by ATT, Microsoft and other ISPs is
>> that they (eventually) remove the blocks, but never once have they
>> provided me with any evidence of the alleged problem email.
> 
> I have seen that as well, both with mailing lists and other emails. The
> best I can get from anyone there is, "we wouldn't have blocked it if
> there weren't an issue," but that doesn't tell me what the issue was (or
> is) so I can address the issue (assuming there actually was one). And
> even with my IP addresses set up in their tracking and reporting systems
> and affiliated with an administrative email address, I have never
> received any reports or warnings that something was about to happen.
> Instead I get complaints about bounces or non-delivery from my clients...


That too is completely consistent with my experience.

-- 
Mark Sapiro The highway is for gamblers,
San Francisco Bay Area, Californiabetter use your sense - B. Dylan
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[Mailman-Users] Re: Fatal Bounces ONLY on ATT (Bellsouth).NET

2021-03-13 Thread steve lund
Mark,

Thanks for your response. So ATT is apparently blocking the email server of
our website host.I have notified our web host so hopefully something good
will happen eventually.

BTW, so what is this "Registering" an email server with an ISP domain? I
assume that it is basically telling them that it is a legitimate email
server. Is it worthwhile trying to get our web host to do this or a waste
of time? I guess has anyone seen positive results from doing so?

Thanks,
Steve


On Sat, Mar 13, 2021 at 11:00 AM Mark Sapiro  wrote:

> On 3/12/21 1:39 PM, steve lund wrote:
> > Hello,
> >
> > It appears to be starting again for our list. Fatal bounces but ONLY on
> > ATT.net. Here is what Google says:
> ...
>
> > <...@att.net>: host ff-ip4-mx-vip1.prodigy.net[144.160.159.21] said: 553
> > 5.3.0 flpd599 DNSBL:RBL 521< 45.33.97.191 >_is_blocked.For assistance
> > forward this error to abuse_...@abuse-att.net (in reply to MAIL FROM
> > command)
>
>
> It may be a coincidence, but I started seeing the same bounces on one of
> my servers (thankfully not mail.python.org or lists.mailman3.org) about
> two days ago.
>
> ATT is blocking your IP.
>
> In my case, I sent this to abuse_...@abuse-att.net.
>
> > You are blocking all mail from IP 138.68.52.125 per this log message.
> >
> > Mar 12 09:59:32 grizz postfix/smtp[10965]: D0CAF1F8123:
> > to=<...>,
> > relay=ff-ip4-mx-vip2.prodigy.net[144.160.159.22]:25, delay=0.38,
> > delays=0.1/0/0.27/0.01, dsn=5.3.0, status=bounced (host
> > ff-ip4-mx-vip2.prodigy.net[144.160.159.22] said: 553 5.3.0 flph832
> > DNSBL:RBL 521< 138.68.52.125 >_is_blocked.For assistance forward this
> > error to abuse_...@abuse-att.net (in reply to MAIL FROM command))
> >
> > This mail is from an opt-in email discussion list or other business
> > related mail from a bicycle club. We do not send spam or unsolicited
> > commercial email. Please remove this block.
>
>
> I received this reply.
>
> > Thank you for contacting the AT&T Postmaster Staff.
> >
> > We investigate every block report and removal request we
> > receive and take the appropriate action, of which you will
> > be notified. It is never the intention of the AT&T
> > Postmaster staff to block legitimate mail. It is a rare
> > but unfortunate occurrence that legitimate correspondence
> > is blocked as a result of careful yet vigorous anti-spam
> > and abuse countermeasures. We would like to rectify your
> > mail delivery issue as soon as possible with your help. By
> > emailing this address you have already taken the first
> > step in resolving this issue.
> >
> > When the AT&T Postmaster staff receives a request with the
> > needed information requests are evaluated. If granted, the
> > block will be removed within 24 to 48 hours. There are
> > situations when mail interruptions or blocks are in place
> > outside the AT&T domain. In these cases, we will attempt
> > to make contact with the party initiating the block and
> > seek a resolution. If there is no change after 48 hours
> > please include the current and complete error message that
> > you are receiving in your follow up email to
> > .
> >
> > For more information about email best practices and mail
> > delivery issues visit:
> >
> > https://www.att.com/esupport/postmaster/
> >
> > We reserve the right to deny or turn down a request if our
> > research shows the requested IP(s) being a violator of
> > SPAM or abuse policies currently, or in the past.
> >
> > We at AT&T thank you for your assistance in reporting this
> > matter and appreciate your patience while we investigate
> > this issue.
> >
> > AT&T Postmaster Staff
>
> As of 03:30 PST this morning the block had not been removed.
>
> --
> Mark Sapiro The highway is for gamblers,
> San Francisco Bay Area, Californiabetter use your sense - B. Dylan
> --
> Mailman-Users mailing list -- mailman-users@python.org
> To unsubscribe send an email to mailman-users-le...@python.org
> https://mail.python.org/mailman3/lists/mailman-users.python.org/
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>
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[Mailman-Users] Re: Fatal Bounces ONLY on ATT (Bellsouth).NET

2021-03-13 Thread Brian Carpenter

On 3/13/21 7:15 PM, steve lund wrote:

Thanks for your response. So ATT is apparently blocking the email server of
our website host.I have notified our web host so hopefully something good
will happen eventually.

BTW, so what is this "Registering" an email server with an ISP domain? I
assume that it is basically telling them that it is a legitimate email
server. Is it worthwhile trying to get our web host to do this or a waste
of time? I guess has anyone seen positive results from doing so?


AT&T doesn't allow such a process. Microsoft has a great program called 
SNDS that I recommend having your web host look into, especially if they 
are hosting mailing lists.


--
Brian Carpenter
Harmonylists.com
Emwd.com
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