Hi,
I use postfix mailserver but mails to @yahoo.com addresses are not sent. The mails are rejected with this message: (XX is my IP adress)
" host mta7.am0.yahoodns.net[98.138.112.34] said: 421 4.7.1 [TS03] All messages from XX.XX.XX.XX will be permanently deferred; Retrying will NOT succeed. See http://postmaster.yahoo.com/421-ts03.html (in reply to MAIL FROM command) "
How to solve this error?
I checked my log for strange mailbehaviour and there are many SMTP and pop3 login attempts from all kind of fake users like julian@mydomain.com, blake@mydomain.com, bmw@mymailserver.com, etc.
Anyone an idea about what is going on and how to solve this?
Searching for the error already gave me a few suggestions, like that I have an open relay, so I edited my postfix main.cf, to cntain a few lines with restrictions like suggested on this forum: http://ubuntuforums.org/archive/index.php/t-2060287.html , but still the same problem.
Was this indeed my problem and do I need to give it more time, or should I fix something else?
Thanks a lot like always!
Howdy,
The website Yahoo links to regarding that issue is this one:
https://help.yahoo.com/kb/postmaster/SLN3436.html?impressions=true
That suggests that Yahoo thinks your server is sending spam, and is rejecting messages from your server.
You may want to go to a site such as this one, and see if your IP address shows up in any RBL lists:
http://www.anti-abuse.org/multi-rbl-check/
Also, what is the output of this command:
mailq | tail -1Many thanks!
It indeed seems to be a blacklisting problem, I suggested a recheck at yahoo so I will wait this out for now.
Another questions, for a new domain, another VPS, I receive this error message:
"
Delivery to the following recipient failed permanently:
Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the server for the recipient domain mydomain.com by srv5.myhostdomain.com. [IP.AD.DR.ES].
The error that the other server returned was: 554 5.7.1 <mail-xxxxxx.google.com[209.85.160.181]>: Client host rejected: Access denied
"
Any ideas on this?
Thanks!