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 <m...@msapiro.net> 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 > > <abuse_...@abuse-att.net>. > > > > 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 <m...@msapiro.net> The highway is for gamblers, > San Francisco Bay Area, California better 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/ > Mailman FAQ: http://wiki.list.org/x/AgA3 > Security Policy: http://wiki.list.org/x/QIA9 > Searchable Archives: > https://www.mail-archive.com/mailman-users@python.org/ > https://mail.python.org/archives/list/mailman-users@python.org/ > ------------------------------------------------------ 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/ Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: https://www.mail-archive.com/mailman-users@python.org/ https://mail.python.org/archives/list/mailman-users@python.org/
