Postfix - pcre

UNIX for Advanced & Expert Users
1

Hello.
I need to test valid sender address.
I have created a rule in main.cf :

smtpd_sender_login_maps = pcre:/etc/postfix/sender_login_maps.pcre
smtpd_sender_restrictions =
    reject_non_fqdn_sender,
    reject_unknown_sender_domain,
    reject_sender_login_mismatch

THe file '/etc/postfix/sender_login_maps.pcre' contain :

/^[a-zA-Z0-9.-]+@troll-hathor.nwk$/   ${1}

When I try the regex in some internet site (Match an email address - Regex Tester/Debugger), I got a null result for a bad string

first.name@mon_domain.com@mon_domain.com

which return

NULL

and I got the initial string for a good string

first.name@mon_domain.com

which return :

first.name@mon_domain.com

When testing the rule with postfix, a bad string

sudo postmap -f -q first.name@mon_domain.com@mon_domain.com pcre:/etc/postfix/sender_login_maps.pcre

return :

first.name@mon_domain.com

A good string :

sudo postmap -f -q first.name@mon_domain.com pcre:/etc/postfix/sender_login_maps.pcre

return :

first.name

I am expecting a null string if the sender must be rejected.
It seems to be a rewrite functionality.

I want the mail rejected (not send if the sender is rejected)

Any help is welcome.

2

Changing code to this works :

/^[a-zA-Z0-9.-]+@troll-hathor.nwk$/   ${1}@troll-hathor.nwk