Hello All,
I have a clients who's email server is getting a lot of helo rejects from it
(windows box). The client has a .NET domain for their servers ( hardware )
and a .COM for their email address.
I manually had a conversation with my postfix server that has these
settings:
reject_invalid_helo_hostname,
check_helo_access hash:/etc/postfix/helo_access,
reject_invalid_helo_hostname,
reject_non_fqdn_helo_hostname,
I verified reverse DNS, all domains exist etc.
Here are my results:
220 receivingserver.net ESMTP Postfix
EHLO sendingserver.net 250-receivingserver.net
250-PIPELINING
250-SIZE 24000000
250-ETRN
250-AUTH DIGEST-MD5 PLAIN LOGIN CRAM-MD5
250-AUTH=DIGEST-MD5 PLAIN LOGIN CRAM-MD5
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
MAIL From: < [email protected] <mailto:[email protected]%3e250>
>250 2.1.0 Ok
RCPT To: <[email protected]>554 5.7.1 < sendingserver.net>: Helo
command rejected: Helo Check
Any ideas appreciated!
Thanks!
