text_combined: johnson httlfleqgmailcom hi ive put new postfix server online acting companys main email gateway setup currently centos 51 linux 26185316el5 1 smp postfix 247 virtual domains amavis spam dovecot tried postfix 250 247 well implementing virtual domain lookups mysql inet local socket hash files first sending receiving mail domains fine except couple seeing multiple entries postmaster mailbox showing subject postfix smtp server errors smtp104sbcmailre2yahoocom68142229101 transcript session follows 220 mailcenterpointecom esmtp postfix 250 helo smtp104sbcmailre2yahoocom 250 mailcenterpointecom mail 250 210 ok rcpt 250 215 ok data 354 end data 451 430 error queue file write error session aborted reason lost connection receiving error yahoo servers 2 servers running different mtas yahoo apparently qmail one others sendmail using esmtp behavior errors occur 90100 minutes full restart postfix fresh mail servers comes fine tcpdump filtered wireshark shows behavior acks 66 bytes incoming smtp payloads 100 bytes 1 0000000 68142207247 6930124196 tcp tcp segment reassembled pdu 100 2 0000016 6930124196 68142207247 tcp smtp 33786 ack seq0 ack46 win46 len0 tsv371131015 tser1630725031 66 3 60063690 68142207247 6930124196 tcp tcp segment reassembled pdu 100 4 60063705 6930124196 68142207247 tcp smtp 33786 ack seq0 ack92 win46 len0 tsv371191094 tser1630725031 66 5 120148871 68142207247 6930124196 tcp tcp segment reassembled pdu 100 6 120148890 6930124196 68142207247 tcp smtp 33786 ack seq0 ack138 win46 len0 tsv371251194 tser1630725031 66 7 180212857 68142207247 6930124196 smtp message body 100 8 180212877 6930124196 68142207247 tcp smtp 33786 ack seq0 ack184 win46 len0 tsv371311273 tser1630725031 66 9 240280265 68142207247 6930124196 smtp message body 100 10 240280288 6930124196 68142207247 tcp smtp 33786 ack seq0 ack230 win46 len0 tsv371371357 tser1630725031 66 11 300337234 68142207247 6930124196 tcp tcp segment reassembled pdu 100 12 300337250 6930124196 68142207247 tcp smtp 33786 ack seq0 ack276 win46 len0 tsv371431431 tser1630725031 66 yahoocom debug_peer_list see following packets come quickly data trickle feb 19 124943 mail postfixsmtpd14219 web32703mailmudyahoocom68142207247 354 end data feb 19 124943 mail postfixsmtpd14219 vstream_fflush_some fd 9 flush 37 feb 19 124944 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 125044 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 125044 mail postfixsmtpd14219 rec_put type n len 72 data received feb 19 125144 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 125144 mail postfixsmtpd14219 rec_put type n len 48 data domainkey feb 19 125244 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 125244 mail postfixsmtpd14219 rec_put type n len 23 data ss1024 feb 19 125344 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 125444 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 125444 mail postfixsmtpd14219 rec_put type n len 121 data hxymai continues like see nothing vstream_buf_get_ready smtp session note timestamps feb 19 150659 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 150759 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 150859 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 150959 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 151059 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 151159 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 151259 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 46 feb 19 151259 mail postfixsmtpd14219 vstream_buf_get_ready fd 9 got 38 feb 19 151259 mail postfixsmtpd14219 vstream_fflush_some fd 25 flush 4096 feb 19 151259 mail postfixsmtpd14219 web32703mailmudyahoocom68142207247 451 430 error queue file write error stack trace different time period behavior 9701 183628 send7 22feb 18 183628 postfixsmtpd9701 vstream_buf_get_ready fd 9 got 46 75 msg_nosignal 75 9701 183628 send7 22feb 18 183628 postfixsmtpd9701 rec_put type n len 49 data messageid 79 msg_nosignal 79 9701 183628 send7 22feb 18 183628 postfixsmtpd9701 rec_put type n len 17 data mimeversi 79 msg_nosignal 79 9701 183628 pollfd9 eventspollin reventspollin 1 300000 1 9701 183728 read9 partalternativerntboundary_nextpart_0 4096 46 9701 183728 send7 22feb 18 183728 postfixsmtpd9701 vstream_buf_get_ready fd 9 got 46 75 msg_nosignal 75 9701 183728 send7 22feb 18 183728 postfixsmtpd9701 rec_put type n len 36 data contentty 79 msg_nosignal 79 9701 183728 pollfd9 eventspollin reventspollin 1 300000 1 9701 183828 read9 00_0001_01c872579f592580rnxmailer microsof 4096 46 9701 183828 send7 22feb 18 183828 postfixsmtpd9701 vstream_buf_get_ready fd 9 got 46 75 msg_nosignal 75 9701 183828 send7 22feb 18 183828 postfixsmtpd9701 rec_put type n len 53 data boundary 79 msg_nosignal 79 9701 183828 pollfd9 eventspollin reventspollin 1 300000 1 9701 183928 read9 office outlook 120rnthreadindex achtlrc8c 4096 46 9701 183928 send7 22feb 18 183928 postfixsmtpd9701 vstream_buf_get_ready fd 9 got 46 75 msg_nosignal 75 9701 183928 send7 22feb 18 183928 postfixsmtpd9701 rec_put type n len 39 data xmailer 79 msg_nosignal 79 9701 183928 pollfd9 eventspollin reventspollin 1 300000 1 since sending server 451 think getting retry good four hours strangely though seems may getting occasionally despite error getting duplicates timestamps arriving different times apologize long message pretty much stumped point help would appreciated configs vngamail cat maincf queue_directory varspoolpostfix command_directory usrsbin daemon_directory usrlibexecpostfix mail_owner postfix default_privs nobody setgid_group postdrop message_size_limit 20480000 myhostname mailcenterpointecom mydomain centerpointecom myorigin myhostname inet_interfaces mydestination myhostname localhostmydomain mydestination myhostnamemydomain localhost mynetworks_style subnet mynetworks 693012419228 1270008 masquerade_domains mailermydomain mydomain unknown_local_recipient_reject_code 550 in_flow_delay 1s smtpd_banner myhostname esmtp mail_name mail_version debug_peer_level 5 debugger_command pathbinusrbinusrlocalbinusrx11r6bin debug_peer_list 3810021172 6930124200 yahoocom data_directory varlibpostfix sendmail_path usrsbinsendmail newaliases_path usrbinnewaliases mailq_path usrbinmailq html_directory manpage_directory usrlocalman sample_directory etcpostfix readme_directory rootmailsystem_installdocspostfixreadmes alias_maps hashetcpostfixaliases virtual_mailbox_domains hashetcpostfixvdomains virtual_mailbox_maps hashetcpostfixvmailbox virtual_alias_maps hashetcpostfixvaliaseshashetcpostfixemail2email_map virtual_transport dovecot dovecot_destination_recipient_limit 1 sasl authentication handled dovecot smtpd_sasl_type dovecot smtpd_sasl_path privateauth smtpd_sasl_auth_enable yes recipientsenderclient checks disable_vrfy_command yes smtpd_recipient_restrictions permit_mynetworks permit_sasl_authenticated check_client_access hashetcpostfixwhitelisted_senders_map reject_unauth_destination reject_rbl_client listdsblorg permit smtpd_sender_restrictions reject_rhsbl_sender dsnrfcignorantorg reject_non_fqdn_sender smtpd_client_restrictions check_client_access hashetcpostfixaccess permit content_filter smtpamavis12700110024 tls ssl section smtpd_use_tls yes smtpd_tls_cert_file etcsslcertsdovecotpem smtpd_tls_key_file etcsslprivatedovecotpem smtpd_tls_security_level may smtpd_tls_received_header smtpd_tls_loglevel 0 smtpd_tls_auth_only tls_random_source devdevurandom vngamail cat mastercf service type private unpriv chroot wakeup maxproc command args name yes yes yes never 100 smtp inet n n 200 smtpd pickup fifo n n 60 1 pickup cleanup unix n n 0 cleanup qmgr fifo n n 300 1 qmgr tlsmgr unix n 1000 1 tlsmgr rewrite unix n trivialrewrite bounce unix n 0 bounce defer unix n 0 bounce trace unix n 0 bounce verify unix n 1 verify flush unix n n 1000 0 flush proxymap unix n proxymap smtp unix n smtp relaying mail backup mx disable fallback_relay avoid mx loops relay unix n smtp fallback_relay smtp_helo_timeout5 smtp_connect_timeout5 showq unix n n showq error unix n error retry unix n error discard unix n discard local unix n n local virtual unix n n virtual lmtp unix n lmtp anvil unix n 1 anvil scache unix n 1 scache dovecot unix n n pipe flagsdrhu uservmailvmail argvusrlocallibexecdovecotdeliver recipient dropoff unix n n pipe flagsdrhu userpostdroppostdrop argvusrsbinsendmail f sender recipient smtpamavis unix n 8 smtp smtp_data_done_timeout1200 smtp_send_xforward_commandyes disable_dns_lookupsyes max_use20 12700110025 inet n n smtpd content_filter local_recipient_maps relay_recipient_maps smtpd_restriction_classes smtpd_delay_rejectno smtpd_client_restrictionspermit_mynetworksreject smtpd_helo_restrictions smtpd_sender_restrictions smtpd_recipient_restrictionspermit_mynetworksreject smtpd_data_restrictionsreject_unauth_pipelining smtpd_end_of_data_restrictions mynetworks6930124192281270008 smtpd_error_sleep_time0 smtpd_soft_error_limit1001 smtpd_hard_error_limit1000 smtpd_client_connection_count_limit0 smtpd_client_connection_rate_limit0 receive_override_optionsno_header_body_checksno_unknown_recipient_checks local_header_rewrite_clients proxywrite unix n 1 proxymap thu 07 aug 2008 032540 0800 queue file write error domains