I'm running Hardy Heron using the Perfect Server instructions, specifically the Postfix install here: http://www.howtoforge.com/perfect-server-ubuntu8.04-lts-p5 I've got my Postfix/Dovecot server relaying messages from my Outlook to an account on my mail server out to another email address managed by a different email server. Also I can use telnet to send email to an account on the mail server and Postfix will receive and store the email for that account. The problem is that when people send email from say GMail to an email address handled by my Postfix server, the server will not capture the email. The emails bounce. I'm trying hard, in vain so far, to figure out what might be wrong. I did have all this working, including receipt/storage of inbound email for virtual domains I set up with Virtualmin. Something changed Wednesday evening and suddenly I can't receive email into my domains through Postfix. If it helps, here is my postconf -n output: Code: alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases biff = no broken_sasl_auth_clients = yes config_directory = /etc/postfix home_mailbox = Maildir/ inet_interfaces = all mail_spool_directory = /home/mail mailbox_command = procmail -a $EXTENSION mailbox_size_limit = 0 mydestination = www.redwrangler.com, localhost.redwrangler.com, localhost myhostname = www.redwrangler.com myorigin = /etc/mailname recipient_delimiter = + relayhost = smtp_sasl_security_options = noanonymous smtp_tls_note_starttls_offer = yes smtp_use_tls = yes smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination,check_relay_domains smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = yes smtpd_sasl_local_domain = smtpd_sasl_path = private/auth-client smtpd_sasl_security_options = noanonymous smtpd_sasl_type = dovecot smtpd_tls_CAfile = /etc/ssl/certs/cacert.pem smtpd_tls_auth_only = no smtpd_tls_cert_file = /etc/ssl/certs/smtpd.crt smtpd_tls_key_file = /etc/ssl/private/smtpd.key smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout = 3600s smtpd_use_tls = yes tls_random_source = dev:/dev/urandom virtual_alias_domains = $virtual_alias_maps virtual_alias_maps = hash:/etc/postfix/virtual And here's my master.cf file: Code: 10025 inet n - - - - smtpd pickup fifo n - - 60 1 pickup cleanup unix n - - - 0 cleanup qmgr fifo n - n 300 1 qmgr #qmgr fifo n - - 300 1 oqmgr tlsmgr unix - - - 1000? 1 tlsmgr rewrite unix - - - - - trivial-rewrite bounce unix - - - - 0 bounce defer unix - - - - 0 bounce trace unix - - - - 0 bounce verify unix - - - - 1 verify flush unix n - - 1000? 0 flush proxymap unix - - n - - proxymap proxywrite unix - - n - 1 proxymap smtp unix - - - - - smtp relay unix - - - - - smtp -o smtp_fallback_relay= showq unix n - - - - showq error unix - - - - - error retry unix - - - - - error discard unix - - - - - discard local unix - n n - - local virtual unix - n n - - virtual lmtp unix - - - - - lmtp anvil unix - - - - 1 anvil scache unix - - - - 1 scache maildrop unix - n n - - pipe flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient} uucp unix - n n - - pipe flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient) ifmail unix - n n - - pipe flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient) bsmtp unix - n n - - pipe flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient scalemail-backend unix - n n - 2 pipe flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension} mailman unix - n n - - pipe flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py ${nexthop} ${user} When I telnet to mail.redhorsecommunications.com (one of the virtual domains hosted on the server with Virtualmin) to the custom port and from the command line I get this output: Code: Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 www.redwrangler.com ESMTP Postfix (Ubuntu) ehlo localhost 250-www.redwrangler.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN quit 221 2.0.0 Bye Connection closed by foreign host. In Virtualmin, all my users appear to be configured properly as Unix users and so on. My /etc/postfix/virtual file looks fine. Finally, if it matters, I'm in the process of moving domains hosted on several hosting services into one or two VPS servers. So the redwrangler.com domain is hosted elsewhere for the moment. I do not believe DNS is an issue because I had Postfix working fine with a DNS record and Virtualmin account for redwrangler.com on the new server even though DNS currently points traffic for that domain to the old/current server. Any ideas what might be wrong? How I can figure out what prevents Postfix from receiving and storing emails for virtual domains? Thank you!
More data...if it helps Of course after I posted I saw at the very bottom of this topic page a link to this forum topic which, while it doesn't solve my problem, does show a lot of useful ways to generate output, to isolate potential issues. Here are the topics: http://www.howtoforge.com/forums/showthread.php?t=20419 http://www.howtoforge.com/forums/showthread.php?t=20679 If it's useful, here's some more output: Code: nc -v 127.0.0.1 10025 localhost [127.0.0.1] 10025 (?) open 220 www.redwrangler.com ESMTP Postfix (Ubuntu) Running Netcat did appear to hang. However, I'm not familiar with this tool so it may have been waiting for me to generate input. And more output, if it helps: Code: postconf -n | grep mynetworks smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination,check_relay_domains Code: postconf -d | grep mynetworks mynetworks = 127.0.0.0/8 75.127.97.0/24 mynetworks_style = subnet parent_domain_matches_subdomains = debug_peer_list,fast_flush_domains,mynetworks,permit_mx_backup_networks,qmqpd_authorized_clients,relay_domains,smtpd_access_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 smtpd_client_event_limit_exceptions = ${smtpd_client_connection_limit_exceptions:$mynetworks} smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_destination Let me know if anything else would help. Thanks!
Port 25 was missing... In case anyone finds this topic through search, the problem was that I left off the first smtp line in the master.cf file: Code: smtp inet n - - - - smtpd This prevented the Postfix MTA and anything else from binding to port 25. I had disabled port 25 thinking I did not need it because my internet service provider, and a few others in the US, block access to this port. When I put this line back in to the master.cf file, Postfix was/is able to receive email to all the virtual domains I set up with Virtualmin.
