Ok so I'm trying to forward mail from my ubuntu server (lets call it example.com) to a external gmail account using postfix.
The problem is when I send mail using another gmail and yahoo account to monkey@example.com, and I check var/log/mail.info, nothing shows up.
However when I use sendmail in the terminal and send to the same address I get the following written into the log as well as the mail actually sending and ending up in my inbox:
Jan 4 00:02:48 Machine postfix/local[6520]: 6C82DB80C4A: to=<root@example.com>, relay=local, delay=0.01, delays=0/0/0/0.01, dsn=2.0.0, status=sent (delivered to command: procmail -a "$EXTENSION")
Jan 4 00:02:48 Machine postfix/qmgr[6497]: 6C82DB80C4A: removed
Jan 4 00:09:58 Machine postfix/pickup[6496]: B206CB80C46: uid=0 from=<root>
Jan 4 00:09:58 Machine postfix/cleanup[6540]: B206CB80C46: message-id=<20140104050958.B206CB80C46@Machine>
Jan 4 00:09:58 Machine postfix/qmgr[6497]: B206CB80C46: from=<root@example.com>, size=265, nrcpt=1 (queue active)
Jan 4 00:09:59 nightMachine postfix/smtp[6542]: B206CB80C46: to=<destemail@gmail.com>, orig_to=<monkey@example.com>, relay=gmail-smtp-in.l.google.com[74.125.142.26]:25, delay=14, delays=13/0/0.22/0.69, dsn=2.0.0, status=sent (250 2.0.0 OK 1388812199 qd7si6471164igb.62 - gsmtp)
Jan 4 00:09:59 Machine postfix/qmgr[6497]: B206CB80C46: removed
Is there a reason for this? How would I fix it?
I was following this tutorial.
postfix/virtual:
monkey@example.com destemail@gmail.com
Main.cf:
# See /usr/share/postfix/main.cf.dist for a commented, more complete version
# Debian specific: Specifying a file name will cause the first
# line of that file to be used as the name. The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.
myhostname = Machine
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = example.com, Machine, localhost.localdomain, localhost
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
home_mailbox = mail/
#added the following for mail server :O!!
virtual_alias_domains = example.com
virtual_alias_maps = hash:/etc/postfix/virtual
result when I do a dig example.com mx query in terminal:
;; ANSWER SECTION:
example.com. 21600 IN MX 10 mail.example.com.
telnet example.com 25
Connected to example.com.
Escape character is '^]'.
220 Machine ESMTP Postfix (Ubuntu)
Best Answer
You've set your MX record to "mail.example.com". That means that when any mailserver tries to send mail to you, they will do a DNS lookup to find mail.example.com. Since that doesn't exist, the sending system doesn't know where to send the email.
To fix this, do either of the following two things:
It should look like his for an A record:
(except, of course, the IP address should be the actual IP of the server, not the loopback address)
and like this for a CNAME: