Sz?ts ?kos: > Dear list members, > > I have the following problem: > > A 3rd party e-mail provider refuses the HELO/EHLO command if it doesn't > contain a valid FQDN address (which is acceptable from their point of view). > > They refuse it with a 501 (permanent) error
And then they hang up, in violation of SMTP, defined in RFC 5321.
If you believe that Postfix is in error, you MUST cite the
relevant section of RFC 5321, not some random website.
Wietse
