Brian Evans - Postfix List a écrit : > Gabriel Hahmann wrote: >> Hi all, >> >> I'm new to the list and have a problem with my mail system. Recently >> I'm receiving a lot of spam emails coming from the internet but the >> sender is a user from my domain. Then I tried the same thing directly >> from other system, as described below: >> > > The answer to your question is as such. > Add 'check_sender_access pcre:/path/to/config/restrict_internal_domain' > to the end of smtpd_sender_restrictions > (You may use regexp instead of pcre if your postfix does not support it, > use 'postconf -m' to check) > > /path/to/config/restrict_internal_domain: > /.*\.example.com/ REJECT external email with an internal sender address >
that should be /(^|\.)example\.com$/ REJECT ... but there is no need to use pcre. a hash/cdb/... map is enough: .example.com REJECT ... example.com REJECT ... > [snip]
