Hello Noel Jones, thank you very much for your answer.
> Guess #1: > You didn't run "postfix reload" after changing the configuration. First I had the same idea. But I restarted Postfix via '/etc/init.d/postfix restart' and trivial-rewrite is still raising these warnings. > Guess #2: > The configuration you report is not the actual configuration. > > Guess #3: > Not enough information for us to do more than guess. > > To get a better answer, please provide full unaltered > "postconf -n" and unaltered logging demonstrating the problem. Sorry, here is my full 'postconf -n' output: alias_database = alias_maps = config_directory = /etc/postfix disable_vrfy_command = yes message_size_limit = 25165824 mydestination = mydomain = lunox.net myhostname = lunox.net mynetworks = 127.0.0.0/8 78.46.95.147 smtp_tls_security_level = may smtpd_helo_required = yes smtpd_milters = unix:/var/lib/amavis/amavisd-milter.sock smtpd_recipient_restrictions = reject_unknown_sender_domain reject_unknown_recipient_domain permit_sasl_authenticated permit_mynetworks reject_invalid_hostname reject_non_fqdn_sender reject_non_fqdn_recipient reject_unauth_destination reject_invalid_helo_hostname check_policy_service inet:127.0.0.1:8765 check_policy_service inet:127.0.0.1:8766 reject_unknown_client reject_unknown_hostname permit smtpd_sasl_auth_enable = yes smtpd_sasl_path = private/auth smtpd_sasl_type = dovecot smtpd_tls_cert_file = /etc/ssl/x.crt smtpd_tls_key_file = /etc/ssl/x.key smtpd_tls_received_header = yes smtpd_tls_security_level = may strict_rfc821_envelopes = yes transport_maps = cdb:/etc/postfix/transport-maps virtual_alias_domains = mysql:/etc/postfix/virtual-alias-domains.cf virtual_alias_maps = mysql:/etc/postfix/virtual-alias-maps.cf virtual_mailbox_domains = mailbox.lunox.net lists.lunox.net virtual_transport = dovecot Here is a part of my mail logs where I found this warning (I had to replace two domains of my customers; cdomain1.com and cdomain2.com but they are not the same and not subdomains of "mydomain" = lunox.net and trivial-rewrite is always warning about the domain lunox.net): Jun 14 14:25:40 [postfix/smtpd] connect from wall.zjnb.cnuninet.net[211.90.248.97] Jun 14 14:25:42 [policyd-weight] decided action=550 temporarily blocked because of previous errors - retrying too fast. penalty: 30 seconds x 0 retries.; <client=211.90.248.97> <helo=gmail.com> <from=andeeefrietschte...@gmail.com> <to=i...@cdomain1.com>; delay: 0s_ Jun 14 14:25:42 [postfix/smtpd] NOQUEUE: reject: RCPT from wall.zjnb.cnuninet.net[211.90.248.97]: 550 5.7.1 <i...@cdomain1.com>: Recipient address rejected: temporarily blocked because of previous errors - retrying too fast. penalty: 30 seconds x 0 retries.; from=<andeeefrietschte...@gmail.com> to=<i...@cdomain1.com> proto=SMTP helo=<gmail.com> Jun 14 14:25:43 [postfix/smtpd] lost connection after RCPT from wall.zjnb.cnuninet.net[211.90.248.97] Jun 14 14:25:43 [postfix/smtpd] disconnect from wall.zjnb.cnuninet.net[211.90.248.97] Jun 14 14:26:38 [postfix/smtpd] connect from unknown[190.68.101.10] Jun 14 14:26:53 [postfix/smtpd] connect from unknown[88.234.131.122] Jun 14 14:26:54 [postfix/trivial-rewrite] warning: do not list domain lunox.net in BOTH mydestination and virtual_alias_domains Jun 14 14:26:54 [policyd-weight] decided action=DUNNO NULL (<>) Sender; <client=88.234.131.122> <helo=wergvan> <from=> <to...@lommerzheim.net>; delay: 0s_ Jun 14 14:26:54 [sqlgrey] grey: new: 88.234.131.122(88.234.131.122), -und...@-undef- -> f...@lommerzheim.net_ Jun 14 14:26:54 [postfix/smtpd] NOQUEUE: reject: RCPT from unknown[88.234.131.122]: 450 4.7.1 Client host rejected: cannot find your hostname, [88.234.131.122]; from=<> to=<f...@lommerzheim.net> proto=SMTP helo=<wergvan> Jun 14 14:26:55 [postfix/smtpd] disconnect from unknown[88.234.131.122] Jun 14 14:27:01 [postfix/anvil] statistics: max connection rate 2/60s for (smtp:77.123.96.16) at Jun 14 14:18:44 Jun 14 14:27:01 [postfix/anvil] statistics: max connection count 2 for (smtp:77.123.96.16) at Jun 14 14:18:44 Jun 14 14:27:01 [postfix/anvil] statistics: max cache size 6 at Jun 14 14:17:11 Jun 14 14:27:22 [policyd-weight] decided action=550 temporarily blocked because of previous errors - retrying too fast. penalty: 30 seconds x 0 retries.; <client=190.68.101.10> <helo=hrbufqfeet> <from=cave...@oceanmortgage.net> <to=fwg...@lommerzheim.com>; delay: 0s_ Jun 14 14:27:22 [postfix/smtpd] NOQUEUE: reject: RCPT from unknown[190.68.101.10]: 550 5.7.1 <fwg...@lommerzheim.com>: Recipient address rejected: temporarily blocked because of previous errors - retrying too fast. penalty: 30 seconds x 0 retries.; from=<cave...@oceanmortgage.net> to=<fwg...@lommerzheim.com> proto=ESMTP helo=<HRBUFQFEET> Jun 14 14:27:37 [postfix/smtpd] warning: 89.47.97.96: hostname TIMnet-97-96.tim.ro verification failed: Name or service not known Jun 14 14:27:37 [postfix/smtpd] connect from unknown[89.47.97.96] Jun 14 14:27:38 [policyd-weight] weighted check: IN_DYN_PBL_SPAMHAUS=3.25 IN_SBL_XBL_SPAMHAUS=4.35 IN_SPAMCOP=3.75; <client=89.47.97.96> <helo=freenet.de> <from=dringend...@freenet.de> <to=i...@cdomain2.com>; rate: 11.35_ Jun 14 14:27:38 [policyd-weight] decided action=550 Your MTA is listed in too many DNSBLs; check http://www.robtex.com/rbl/89.47.97.96.html; <client=89.47.97.96> <helo=freenet.de> <from=dringend...@freenet.de> <to=i...@cdomain2.com>; delay: 1s_ Jun 14 14:27:38 [postfix/smtpd] NOQUEUE: reject: RCPT from unknown[89.47.97.96]: 550 5.7.1 <i...@cdomain2.com>: Recipient address rejected: Your MTA is listed in too many DNSBLs; check http://www.robtex.com/rbl/89.47.97.96.html; from=<dringend...@freenet.de> to=<i...@cdomain2.com> proto=SMTP helo=<freenet.de> Jun 14 14:27:38 [postfix/smtpd] lost connection after RCPT from unknown[89.47.97.96] Jun 14 14:27:38 [postfix/smtpd] disconnect from unknown[89.47.97.96] Do you need more configuration files? Or any other information? Best regards. Bernd Lommerzheim