postfix-users May 2014 archive
Main Archive Page > Month Archives  > postfix-users archives
postfix-users: Re: bounce requeuing for a specific domain

Re: bounce requeuing for a specific domain

From: Dave Jones <davejones70_at_nospam>
Date: Tue May 13 2014 - 15:00:23 GMT
To: Postfix users <postfix-users@postfix.org>

>Dave Jones:
>> I have read the documentation and searched the web without any success.
>>
>> Is it possible to setup a specific destination domain to not bounce
>> but always tempfail/requeue?

>You could configure a dedicated SMTP client in master.cf with "-o
>soft_bounce=yes", combined with transport_maps to send mail there.

>Or, you could use smtp_reply_filter to modify the server reponse.

Thank you for this information. Postfix is very powerful so I knew it
could be done but sometimes the documentation is difficult to find
if you don't know what keywords to search on for advanced configs.

>> mailin-02.mx.aol.com[64.12.88.163] said: 521 5.2.1 : (CON:B1)
>> http://postmaster.info.aol.com/errors/554conb1.html (in reply to end
>> of DATA command))

>CON:B1 means: "The IP address has been blocked due to a spike
>in unfavorable e-mail statistics."

>Clearly, retrying an unfavorable peak does not help.

I know what the message means since I can follow links and read.

I have some "special processing" that will take care of this problem
and retry delivery but I don't want to give the details on the list.

On Tue, May 13, 2014 at 9:47 AM, Wietse Venema <wietse@porcupine.org> wrote:
> Dave Jones:
>> I have read the documentation and searched the web without any success.
>>
>> Is it possible to setup a specific destination domain to not bounce
>> but always tempfail/requeue?
>
> You could configure a dedicated SMTP client in master.cf with "-o
> soft_bounce=yes", combined with transport_maps to send mail there.
>
> Or, you could use smtp_reply_filter to modify the server reponse.
>
>> mailin-02.mx.aol.com[64.12.88.163] said: 521 5.2.1 : (CON:B1)
>> http://postmaster.info.aol.com/errors/554conb1.html (in reply to end
>> of DATA command))
>
> CON:B1 means: "The IP address has been blocked due to a spike
> in unfavorable e-mail statistics."
>
> Clearly, retrying an unfavorable peak does not help.
>
> Wietse