Reject messages sent from a given sender to a given recipient domain

[h***@gmail.com]

Hi,

I know it is possible to deny a given sender or a given recipient.
But how to create a rule that checks both?

I want to temporarily reject messages sent from apache/php (www-***@mydomain.ltd) to a given domain (externaldomain.ltd)

Should I define some sender dependent transport mapping?
I can't find any example about this.

[Rob Brown]

Post by h***@gmail.com
I know it is possible to deny a given sender or a given recipient.
But how to create a rule that checks both?

A single rule? I am too much of a newbie to have an opinion about
that. But <http://jimsun.linxnet.com/misc/postfix-anti-UCE.txt> looks
promising if you will accept building up multiple rules to accomplish
your goal.