I am attempting to configure a Postfix MTA in CentOS 6.3 for our school. The Postfix server has to send and receive email through a Fortimail firewall. Outgoing email is working fine. Email sent locally using the mail command to a local user on the CentOS/Postfix server works fine. However, all email coming in to the Fortimail firewall addressed to users on the Postfix server is NOT being accepted by Postfix. Inbound mail from Fortimail is being deferred and ultimately rejected by Postfix. It appears the email is being forwarded/relayed from the Fortimail firewall to the Postfix server. There are no errors on the Fortimail firewall.
Here is the main.cf file as it is currently configured:
queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
mail_owner = postfix
myhostname = bps.gvltec.edu
inet_interfaces = all
inet_protocols = all
mydestination = $myhostname, localhost.$mydomain, localhost
unknown_local_recipient_reject_code = 550
relayhost = [fortimail.ip.address.here]
relay_recipient_maps = hash:/etc/postfix/relay_recipients
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
debug_peer_level = 2
ddd $daemon_directory/$process_name $process_id & sleep 5
sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
html_directory = no
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/postfix-2.6.6/samples
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
Please advise me on what I am missing. I have not been able to locate any posts from users with similar problems. I will be happy to answer questions if somewhere will help me correct this issue.
Thank you in advance for your help.
This isn't a support forum for Postfix, it's for the companion package Postfix Admin. You will almost certainly get better help from the Postfix specific forums.
However, what I;d suggest is that the logs would be a good place to start. They usually give a good idea what's going on.
So capture the logs (usually /var/log/mail.log) while a message is being received, then people will have an idea what's happening.
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