[SOLVED] Changing Return Codes 550 5.7.1 and Others

[thebiggeek]

Today I noticed that some of the Yahoo.co.in IP's are blacklisted, and while I have set my DNSBL Threshold to 2, and have multiple lists, these IP's appeared everywhere. The Mails were bounced back and the return email to Yahoo said

550: 5.7.1 Service unavailable

This to me confuses the sender on what happened, and since they won't be able to goto Yahoo to ask what is going on here or be techs, this is confusing. I wanted to check if anyone knew, how to send a Custom message - when a mail is bounced back due to DNSBL? Is there way to customise the Error Code

I have noticed that People like Yahoo send a URL When they reject a mail - can we do something like this?

Any inputs would be lovely

 

[Stoiko Ivanov]

Not sure I understand the request completely - could you please post some logs and point to which part of which message you want to change?

* Postfix does log, and does respond to the sending server with a message indicating that the mail is rejected because the ip is blacklisted (and also adds the dnsbl in it's reply) - see the output of

postconf -d |grep default_rbl
default_rbl_reply = $rbl_code Service unavailable; $rbl_class [$rbl_what] blocked using $rbl_domain${rbl_reason?; $rbl_reason}

and http://www.postfix.org/postconf.5.html#default_rbl_reply

I hope this helps!

 

[thebiggeek]

Not sure I understand the request completely - could you please post some logs and point to which part of which message you want to change?

* Postfix does log, and does respond to the sending server with a message indicating that the mail is rejected because the ip is blacklisted (and also adds the dnsbl in it's reply) - see the output of

postconf -d |grep default_rbl
default_rbl_reply = $rbl_code Service unavailable; $rbl_class [$rbl_what] blocked using $rbl_domain${rbl_reason?; $rbl_reason}

and http://www.postfix.org/postconf.5.html#default_rbl_reply

I hope this helps!

Thank you - this does help

 

[Stoiko Ivanov]

Glad that helped - please mark the thread as 'SOLVED'
Thanks!