Hi, I have a cronjob that rebuilds my /etc/postfix/virtual_alias and /etc/postfix/virtual_transport files every 15 minutes. I have noticed that while the rebuild is going on and all processes realize that the files have changed and restart I often get bounced mails.
For example, this is an excerpt from my log file from today: Oct 9 15:30:27 thor postfix/lsf-relay/smtpd[25537]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:30:27 thor postfix/lsf-relay/smtpd[25536]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:30:27 thor postfix/lsf-relay/smtpd[25088]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:30:27 thor postfix/smtpd[24267]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:30:27 thor postfix/smtpd[24239]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:30:27 thor postfix/cleanup[26125]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:30:27 thor postfix/cleanup[26562]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:30:27 thor postfix/lmtp[22259]: 8C49D31180: to=<ali...@uni-duesseldorf.de>, orig_to=<main-addre...@uni-duesseldorf.de>, relay=none, delay=0.03, delays=0.02/0/0/0, dsn=5.4.4, status=bounced (unable to look up host uni-duesseldorf.de: Name or service not known) Oct 9 15:30:27 thor postfix/submission/smtpd[20882]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:30:27 thor postfix/submission/smtpd[20973]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:30:29 thor postfix/submission/smtpd[20853]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:30:33 thor postfix/trivial-rewrite[26561]: table hash:/etc/postfix/virtual_transport(0,lock|no_regsub|fold_fix) has changed -- restarting Oct 9 15:30:34 thor postfix/lmtp[21070]: 9ACD74BD83: to=<ali...@uni-duesseldorf.de>, orig_to=<main-addre...@hhu.de>, relay=none, delay=0.01, delays=0/0/0/0, dsn=5.4.4, status=bounced (unable to look up host uni-duesseldorf.de: Name or service not known) Oct 9 15:30:36 thor postfix/trivial-rewrite[17489]: table hash:/etc/postfix/virtual_transport(0,lock|no_regsub|fold_fix) has changed -- restarting Oct 9 15:30:39 thor postfix/submission/smtpd[20864]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:30:59 thor postfix/smtpd[24159]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:31:02 thor postfix/cleanup[24909]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:31:34 thor postfix/submission/smtpd[20940]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:32:05 thor postfix/submission/smtpd[20874]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting Oct 9 15:32:08 thor postfix/submission/smtpd[18477]: table hash:/etc/postfix/virtual_alias(0,lock|fold_fix) has changed -- restarting My only idea how to fix this would be modifying the cronjob to hold all mails before rebuilding the files and releasing all mails after. Is there a better way or is my setup just stupid? Obligatory postconf -n: postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases broadcaster_only = check_policy_service inet:localhost:2000 broken_sasl_auth_clients = yes command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix debug_peer_level = 2 debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd $daemon_directory/$process_name $process_id & sleep 5 delay_warning_time = 4h header_checks = regexp:/etc/postfix/header_checks html_directory = no inet_interfaces = all inet_protocols = ipv4 lmtp_host_lookup = native local_recipient_maps = $virtual_mailbox_maps mail_owner = postfix mailbox_size_limit = 14336000000 mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man message_size_limit = 143360000 mydestination = $myhostname, localhost.$mydomain, localhost mynetworks = 127.0.0.0/8 cidr:/etc/postfix/mynetworks-25.cidr mynetworks_style = host newaliases_path = /usr/bin/newaliases.postfix propagate_unmatched_extensions = queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.10.1/README_FILES recipient_delimiter = + relay_domains = ddz.uni-duesseldorf.de mail.ddz.uni-duesseldorf.de ddfi.uni-duesseldorf.de mail.ddfi.uni-duesseldorf.de dfi.uni-duesseldorf.de mail.ddfi.uni-duesseldorf.de frodo.rz.uni-duesseldorf.de osxpr.fon.hhu.de relay_recipient_maps = hash:/etc/postfix/relay_recipients sample_directory = /usr/share/doc/postfix-2.10.1/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtp_host_lookup = native smtp_tls_cert_file = /etc/postfix/cert/thor-cert.pem smtp_tls_key_file = /etc/postfix/cert/thor-key.pem smtp_tls_security_level = may smtpd_policy_service_timeout = 200s smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination smtpd_restriction_classes = broadcaster_only smtpd_sasl_auth_enable = yes smtpd_sasl_path = inet:192.168.25.210:12345 smtpd_sasl_type = dovecot smtpd_tls_cert_file = /etc/postfix/cert/thor-cert.pem smtpd_tls_key_file = /etc/postfix/cert/thor-key.pem smtpd_tls_security_level = may transport_maps = hash:/etc/postfix/virtual_transport hash:/etc/postfix/relay_transport_maps unknown_local_recipient_reject_code = 550 virtual_alias_expansion_limit = 50000 virtual_alias_maps = hash:/etc/postfix/virtual_alias virtual_mailbox_domains = hash:/etc/postfix/virtual_mailbox_domains virtual_mailbox_maps = $virtual_alias_maps virtual_transport = lmtp Thanks Julian
