Hi all, I have been looking for a solution to this in the forums, lists, etc but unfortunately I could not find an answer... I also know that the subject has been discussed several times so please bear with me...
The environment: -- # rpm -q postfix postfix-2.3.3-2.3.el5_6 -- The symptoms: -- Feb 21 14:20:44 smtp2 postfix/smtpd[20600]: connect from unknown[1.2.3.4] Feb 21 14:20:44 smtp2 postfix/smtpd[20600]: NOQUEUE: reject: RCPT from unknown[1.2.3.4]: 554 5.7.1 <x...@domain1.tld>: Relay access denied; from=<y...@domain2.tld> to=<x...@domain1.tld> proto=ESMTP helo=<mypc> Feb 21 14:20:47 smtp2 postfix/smtpd[20600]: disconnect from unknown[1.2.3.4] -- The IP range is allowed -- # postmap -q 1.2.3 /etc/postfix/network_table OK -- The relevant main.cf parts: -- inet_interfaces = all mydestination = $myhostname, localhost.$mydomain, localhost unknown_local_recipient_reject_code = 550 mynetworks_style = host smtpd_helo_required = yes disable_vrfy_command = yes smtpd_helo_restrictions = permit_mynetworks smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unknown_recipient_domain, check_client_access hash:/etc/postfix/client_access permit_auth_destination smtpd_sender_restrictions = permit_mynetworks, permit_auth_destination, permit_sasl_authenticated, permit_auth_destination, reject_unknown_sender_domain, permit smtpd_recipient_restrictions = permit_mynetworks, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unknown_sender_domain, reject_unauth_destination, reject_rbl_client cbl.abuseat.org, reject_rbl_client sbl.spamhaus.org, reject_rbl_client pbl.spamhaus.org permit smtpd_data_restrictions = reject_unauth_pipelining, permit mynetworks = hash:/etc/postfix/network_table relay_domains = relayhost = [a.b.c.d] smtpd_sasl_type = cyrus smtpd_sasl_auth_enable = yes smtpd_sasl_local_domain = $myhostname broken_sasl_auth_clients = yes smtpd_sasl_path = smtpd -- Am I overseeing the obvious? :-/ Please let me know if you need further infos on this. Thanks in advance! Regards, Martin