Hello I'm testing mail server with mysql backend. Generally it works quite well. But from time to time during testing, single mails can't be send because of smtp errors:
in mail.log Feb 3 13:47:37 mail postfix/smtpd[28339]: NOQUEUE: reject: RCPT from unknown[ip]: 451 4.3.0 <u...@domain.org>: <piotr...@kujawy.com.pl> Temporary lookup failure; from=<u...@domain.org <piotr...@kujawy.com.pl>> to=< u...@domain2.org <piotr...@kujawy.com.pl>> proto=ESMTP helo=<domain.org > in mail.warn Feb 3 13:47:37 kurier4 postfix/trivial-rewrite[2438]: warning: transport_maps lookup failure when I check transport_map: postconf | grep transport_map address_verify_transport_maps = $transport_maps fallback_transport_maps = mailbox_transport_maps = mydestination = $myhostname, localhost.localdomain, $transport_maps proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks transport_maps = mysql:/etc/mail/sql/mysql-transport.cf my /etc/mail/sql/mysql-transport.cf looks like that: user = postfix password = password dbname = maildb table = transport select_field = destination where_field = domain hosts = 127.0.0.1 Generally I'm thinking that it could be mysql error - but there is nothing wrong in its error log... I set really big limit of concurrent connections max_user_connections = 1000 So what can be wrong? Any ideas? Thank in progress for any help best regards nichu
