> -----Original Message-----
> From: owner-postfix-us...@postfix.org [mailto:owner-postfix-
> us...@postfix.org] On Behalf Of Michael Fox
> Sent: Wednesday, September 24, 2014 10:24 AM
> To: 'postfix users'
> Subject: RE: header checks for a relay client
>
> > > What you can do is create a restriction class to check the sender
> > > and the recipient, and reject the message if both match. The
> > > general procedure is outlined here, with some examples similar to
> > > what you're asking:
> > > http://www.postfix.org/RESTRICTION_CLASS_README.html
>
> I don't see how this addresses the problem of rejecting messages that are
> both:
> -- From: a certain address (or domain), and
> -- To: a certain address (or domain).
>
> For example, I'd like to block messages if:
> The sender matches /.*@yahoogroups\.com/
> -and-
> The recipient matches /.*@client[1-6]\.domain2\.com/
>
> Would you be so kind as to provide an example?
>
> Thanks much,
> Michael
I really could use more examples in the documentation to help me synthesize
how all the parts fit together. But I'm trying. Would the following work?
main.cf:
smtpd_recipient_restrictions =
check_recipient_access
pcre:/etc/postfix/no_yahoo_groups_recipients.pcre
smtpd_restriction_classes = reject_yahoo_groups_sender
reject_yahoo_groups_sender = check_sender_access
pcre:/etc/postfix/reject_yahoo_groups_sender.pcre
/etc/postfix/no_yahoo_group_recipients.pcre:
/client[1-6]\.domain2\.com/ reject_yahoo_groups_sender
/etc/postfix/reject_yahoo_groups_sender.pcre
/@yahoogroups\.com/ REJECT
Michael
