LuKreme wrote: > On 4-Dec-2008, at 08:18, Brian Evans - Postfix List wrote: >> Add 'check_sender_access pcre:/path/to/config/restrict_internal_domain' >> to the end of smtpd_sender_restrictions >> >> /path/to/config/restrict_internal_domain: >> /.*\.example.com/ REJECT external email with an internal sender >> address > > > You would need to list all the domains you process mail for here, > right? And this is a check against the envelope from, right? (From_ > and not From:) > That is correct. You can also use pcre/regex magic to do multiple domains in a single check, but test throughly and be comfortable before committing. Only the envelope matters to me for rejects. This allows proper mailing list software to function as well as many web forms.
Brian
