Hi, I would like to tag/replace each message Subject: with some custom pattern and leave the rest unchanged.
I'm using following header_checks rule: /^Subject:.*/ REPLACE Subject: PRE $1 but I get a warning: Aug 17 19:03:57 mail postfix/cleanup[20807]: [ID 947731 mail.warning] warning: regexp map /etc/postfix/header_checks, line 1: out of range replacement index "1": skipping this rule the same rule without $1 is working fine. I'm using postfix 2.5.7. Any thoughts please? Thank you, Stefan
