>"exim -bh <ip-address>" чо кажет?это тест Эксченджа
[root@mx ~]# exim -bh 192.168.100.50
**** SMTP testing session as if from host 192.168.100.50
**** but without any ident (RFC 1413) callback.
**** This is not for real!
>>> host in hosts_connection_nolog? no (option unset)
>>> host in host_lookup? yes (matched "*")
>>> looking up host name for 192.168.100.50
>>> IP address lookup using gethostbyaddr()
>>> IP address lookup failed: h_errno=1
LOG: no host name found for IP address 192.168.100.50
>>> host in host_reject_connection? no (option unset)
>>> host in sender_unqualified_hosts? no (option unset)
>>> host in recipient_unqualified_hosts? no (option unset)
>>> host in helo_verify_hosts? no (option unset)
>>> host in helo_try_verify_hosts? no (option unset)
>>> host in helo_accept_junk_hosts? no (option unset)
220 mydomain.com secure smtp server
это самого экзима
[root@mx ~]# exim -bh 127.0.0.1
**** SMTP testing session as if from host 127.0.0.1
**** but without any ident (RFC 1413) callback.
**** This is not for real!
>>> host in hosts_connection_nolog? no (option unset)
>>> host in host_lookup? yes (matched "*")
>>> looking up host name for 127.0.0.1
>>> IP address lookup yielded localhost
>>> gethostbyname2 looked up these IP addresses:
>>> name=mx.mydomain.com address=127.0.0.1
>>> checking addresses for localhost
>>> 127.0.0.1 OK
>>> host in host_reject_connection? no (option unset)
>>> host in sender_unqualified_hosts? no (option unset)
>>> host in recipient_unqualified_hosts? no (option unset)
>>> host in helo_verify_hosts? no (option unset)
>>> host in helo_try_verify_hosts? no (option unset)
>>> host in helo_accept_junk_hosts? no (option unset)
220 mydomain.com secure smtp server