Question : postifx and amavisd-new : use null address for spam bounces

hi experts

Yahoo recommends : "when sending a bounce message, use the null address "<>" as the bounce address." (recommandation #14 of http://help.yahoo.com/l/us/yahoo/mail/postmaster/basics/postmaster-15.html)

I'm trying to find a way to implement this on my Debian Etch, with postfix (version 2.3.8) and  amavisd-new (version 2.4.2 20060627).


Does an expert know how to do this ? If I have to modify amavisd-new code, what would that be ?


In /doc/amavisd-new/README.customize It says :
" The substitution text for the following simple macros is built-in:

- to be used in forming a mail header (properly quoted
  addresses as required by RFC2822):

  f  administrator's e-mail address (typically used in 'From:' header
     of notification messages);
(...)
"

Reading Postfix documentation, I could not find any configuration variable for this.
 



I implemented every other recommandation from yahoo so as to see the mail originating from my server delivered to yahoo accounts (including SPF, DomainKeys etc...) without being deferred or going to the junk folder. I've had success with other major email provider (including hotmail, gmail...) but not with yahoo.

My server is, low traffic. I do get a lot of spam, most of which is rejected with amavisd-new + spamassassin... so I send a lot of bounces after the smtp connection is done, and I think that might be why my server has a poort reputation with yahoo. This is why I would like to try the null address for bounces.

thanks a lot

Answer : postifx and amavisd-new : use null address for spam bounces

You should never bounce spam mails.
They use forged email addresses so all you are doing is forwarding the spam onto the faked senders address. Anyone doing that is likely to find themselves on an email blacklist at some point.

Emails which are blocked due to content (an exe file for example) and also are not detected as spam or a virus can be bounced. All spams and viruses should either be rejected at the mail server or if they have already been received deleted or marked as spam.