[Solved] Postfix is not sending any email

Hi, thank you very much for the answer.

In the meantime I tried copying the file

/etc/services

to

/var/spool/postfix/etc/services

and now the error message is different... it means that probably I solved the previous issue, but now I get this one:

Nov 5 19:04:52 fabio postfix/smtp[9738]: 36291F1B0B02: to=destemail@libero.it, orig_to=senderemail@senderdomain.it, relay=none, delay=4704, delays=4704/0.01/0/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name service error for name=libero.it type=MX: Host not found, try again).

Looks like Postfix is not able to resolve the destination domain name, although libero.it is a valid domain name (I tried with my working email, of course).

If I DIG the domain, I get the correct result:

[root@fabio log]# dig libero.it

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.5 <<>> libero.it ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37299 ;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION: ;libero.it. IN A

;; ANSWER SECTION: libero.it. 2881 IN A 151.1.67.215 libero.it. 2881 IN A 151.1.67.216 libero.it. 2881 IN A 151.1.67.218 libero.it. 2881 IN A 151.1.67.221 libero.it. 2881 IN A 151.1.67.227

;; Query time: 14 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Mon Nov 5 19:10:34 2012 ;; MSG SIZE rcvd: 107

So it means that the server is able to resolve the domain...

the output of the command postconf -n is:

alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases allow_percent_hack = no append_dot_mydomain = no biff = no broken_sasl_auth_clients = yes config_directory = /etc/postfix home_mailbox = Maildir/ mailbox_command = /usr/bin/procmail-wrapper -o -a $DOMAIN -d $LOGNAME mailbox_size_limit = 0 mydestination = fabio.myserver.info, localhost.myserver.info, localhost myhostname = fabio.myserver.info mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 myorigin = /etc/mailname readme_directory = no recipient_delimiter = + sender_bcc_maps = hash:/etc/postfix/bcc smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_banner = $myhostname ESMTP $mail_name (CentOS) smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_security_options = noanonymous smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes virtual_alias_maps = hash:/etc/postfix/virtual

and the output of the command grep '^[^#]' /etc/postfix/master.cf is:

smtp inet n - - - - smtpd -o smtpd_sasl_auth_enable=yes pickup fifo n - - 60 1 pickup cleanup unix n - - - 0 cleanup qmgr fifo n - n 300 1 qmgr 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} submission inet n - - - - smtpd -o smtpd_sasl_auth_enable=yes

Thank you in advance.