On 2024-07-09 02:31, John Von Essen via mailop wrote:
Just to pile on ATT issues. I assume you are trying to deliver to an
att.net address, these are the emails they provided for free to
dialup/broadband users, its also legacy prodigy.net.
What you are experiencing is not new news. Yes, ATT refuses email from
any new IP - regardless how clean or dirty it is. And yes, the reason
is always:
553 5.3.0 alph766 DNSBL:RBL 521< 208.88.X.X >_is_blocked.For assistance
forward this error to abuse_...@abuse-att.net
<mailto:abuse_...@abuse-att.net>
My experience with ATT:
Once I run a new mailserver hosted in NYC. When I tried to send mail to
ATT from that server, the message was blocked as the info above. But
after I contacted att postmaster by the address above, they did reply me
and unblock my IP/server.
Now I run another new mailserver (this one simplemail.co.in) and I send
messages to ATT, they get passed without problem. I guess the reason is
that mailserver is hosted in Azure which has good reputation on IP
spaces.
Also AFAIK att has the following mail domains included.
att.net
bellsouth.net
sbcglobal.net
currently.com
prodigy.net
Messages come to these domains are filtered by att's own gateway then
delivered to yahoo.
--
Jeff Pang
jeffp...@aol.com
_______________________________________________
mailop mailing list
mailop@mailop.org
https://list.mailop.org/listinfo/mailop
