Hi I have an issue with bounced mail it does not happen all the time but at the same time is very frequent. Most of the time if I send an email to an address that does not exist then i get a bounce back into failues@domain however there seem to be instances when I get this error below
Sep 30 13:38:53 postfix/smtp[62566]: DB8E6D6F9EA: to=, relay=none, delay=0, delays=0/0/0/0, dsn=5.4.6, status=bounced (mail for domain loops back to myself)
I seem to get this when I get an immediate bounce i.e the server im trying to connect to immediately blocks the email because it nows that the address does not exist. If the email goes out and is returned later this seems to work fine.
Does anyone have any ideas why I would get this "mail for domain loops back to myself" error message.
Obviously it is me trying to send the email back to myself as my server received a block when trying to send a mail then it tries to send the mail back to the ReplyTo header which in this case is itself but shouldn't it be able to handle this?
........
NOTE: ive had to remove any '.com' from this post as I can only post 1 url
Thanks for the 2 answers already however we are still having the same issue. so below I'm trying to provide some more detailed information.
Both the examples below try to send to a non-existent address. RealTSP bounce from another postfix instance works. Yahoo's bounce doesn't work. We are expecting a "non-delivery notification" to be delivered to , because the Return-Path in both cases is an equivalent VERP address. Note if we don't use VERP, ie "Return-Path: " then yahoo works also.
Log entries
realtsp.....working! ==================== Oct 6 16:46:08 milford postfix/smtpd[58480]: 5027DD6E971: client=takapuna.realtsp[89.187.108.20], sasl_method=LOGIN, sasl_username=***** Oct 6 16:46:08 milford postfix/cleanup[58482]: 5027DD6E971: message-id= Oct 6 16:46:08 milford postfix/qmgr[57929]: 5027DD6E971: from=, size=9468, nrcpt=1 (queue active) Oct 6 16:46:08 milford postfix/smtp[57936]: 5027DD6E971: to=, relay=milford.realtsp[89.187.108.21]:25, delay=0.64, delays=0.63/0/0/0.01, dsn=5.1.1, status\ =bounced (host milford.realtsp[89.187.108.21] said: 550 5.1.1 : Recipient address rejected: User unknown in virtual mailbox table (in reply to RCPT TO comm\ and)) Oct 6 16:46:08 milford postfix/bounce[58483]: 5027DD6E971: sender non-delivery notification: EA68FD6EAB7 Oct 6 16:46:08 milford postfix/qmgr[57929]: 5027DD6E971: removed Oct 6 16:46:08 milford postfix/cleanup[58482]: EA68FD6EAB7: message-id= Oct 6 16:46:08 milford postfix/qmgr[57929]: EA68FD6EAB7: from=, size=11600, nrcpt=1 (queue active) Oct 6 16:46:09 milford postfix/lmtp[58484]: EA68FD6EAB7: to=, relay=smtp.news.t1ps[/var/imap/socket/lmtp], delay=0.76, delays=0/0.0\ 1/0/0.75, dsn=2.1.5, status=sent (250 2.1.5 Ok) Oct 6 16:46:09 milford postfix/qmgr[57929]: EA68FD6EAB7: removed yahoo...not working! ======================== Oct 6 16:42:01 milford postfix/smtpd[57732]: 33EBBD6EE87: client=takapuna.realtsp[89.187.108.20], sasl_method=LOGIN, sasl_username=**** Oct 6 16:42:01 milford postfix/cleanup[57735]: 33EBBD6EE87: message-id= Oct 6 16:42:01 milford postfix/qmgr[57598]: 33EBBD6EE87: from=, size=9480, nrcpt=1 (queue active) Oct 6 16:42:10 milford postfix/smtp[57636]: 33EBBD6EE87: to=, relay=e.mx.mail.yahoo[206.190.53.191]:25, delay=9.4, delays=0.02/0/6.5/2.9, dsn=5.0.0, s\ tatus=bounced (host e.mx.mail.yahoo[206.190.53.191] said: 554 delivery error: dd This user doesn't have a yahoo account (nkaderibigbe@yahoo) [0] - mta164.mail.re2.yaho\ o (in reply to end of DATA command)) Oct 6 16:42:10 milford postfix/bounce[57756]: 33EBBD6EE87: sender non-delivery notification: A083ED6EA01 Oct 6 16:42:10 milford postfix/qmgr[57598]: 33EBBD6EE87: removed Oct 6 16:42:10 milford postfix/cleanup[57735]: A083ED6EA01: message-id= Oct 6 16:42:10 milford postfix/qmgr[57598]: A083ED6EA01: from=, size=11696, nrcpt=1 (queue active) Oct 6 16:42:10 milford postfix/smtp[57631]: A083ED6EA01: to=, relay=none, delay=0.01, delays=0.01/0/0/0, dsn=5.4.6, status=bounced \ (mail for news.t1ps loops back to myself) Oct 6 16:42:10 milford postfix/qmgr[57598]: A083ED6EA01: removed
main.cf
soft_bounce = no queue_directory = /var/spool/postfix_rsh command_directory = /usr/local/sbin daemon_directory = /usr/local/libexec/postfix data_directory = /var/db/postfix_rsh mail_owner = postfix myhostname = smtp.news.t1ps inet_interfaces = 89.187.108.81 local_recipient_maps = $virtual_mailbox_maps unknown_local_recipient_reject_code = 550 mynetworks_style = host relay_domains = $mydestination recipient_delimiter = + mailbox_transport = lmtp:unix:/var/imap/socket/lmtp header_checks = regexp:/usr/local/etc/postfix_rsh/header_checks debug_peer_level = 10 debug_peer_list = yahoo debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd $daemon_directory/$process_name $process_id & sleep 5 sendmail_path = /usr/local/sbin/sendmail newaliases_path = /usr/local/bin/newaliases mailq_path = /usr/local/bin/mailq setgid_group = maildrop html_directory = no manpage_directory = /usr/local/man sample_directory = /usr/local/etc/postfix_rsh readme_directory = no masquerade_domains = $mydomain message_size_limit = 51200000 virtual_transport = lmtp:unix:/var/imap/socket/lmtp virtual_mailbox_domains = news.t1ps, domain2, domain3.co.uk, domain4 virtual_alias_maps = hash:/usr/local/etc/postfix_rsh/virtual virtual_mailbox_maps = hash:/usr/local/etc/postfix_rsh/virtual_mailbox_maps transport_maps = regexp:/usr/local/etc/postfix_rsh/transport broken_sasl_auth_clients = no smtp_bind_address = 89.187.108.81 smtpd_sasl_auth_enable = yes smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination smtpd_helo_restrictions = reject_invalid_hostname smtpd_require_helo = yes slow_destination_concurrency_limit = 15 slow_destination_recipient_limit = 5 syslog_facility = local1
/usr/local/etc/postfix_rsh/virtual_mailbox_maps
failures@news.t1ps dummy
master.cf
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 - - trivial-rewrite 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 - 500 smtp slow unix - - n - 100 smtp -o smtp_connect_timeout=5 relay unix - - n - 100 smtp -o fallback_relay= 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 26 inet n - n - - smtpd -o content_filter= smtp inet n - n - - smtpd -o content_filter=spamchk:dummy spamchk unix - n n - 10 pipe flags=Rq user=spamd argv=/usr/local/bin/spamchk_rsh -f ${sender} -- ${recipient} proxywrite unix - - n - 1 proxymap