==== Required information ====
- iRedMail version: 0.8.7
- Store mail accounts in: LDAP
- Linux: Debian 7
====

Assigned an unused domain to freshly built server, able to send mail from Roundcube using the admin account to multiple domains.  Replying to those emails or sending directly to the new admin account results in stalled queues with refused connections.

Suspected greylisting issue, so added a remote server IP to https://x/cluebringer/checkhelo-whitelist-main.php but do not see IP in the whitelist after adding?

Can open TCP connections to port 143, but not to port 25 or 110.  Port 25 times out, port 110 immediately rejects connection
Following lines from /etc/default/iptables:

# smtp, submission
-A INPUT -p tcp --dport 25 -j ACCEPT
-A INPUT -p tcp --dport 587 -j ACCEPT

# pop3, pop3s
-A INPUT -p tcp --dport 110 -j ACCEPT
-A INPUT -p tcp --dport 995 -j ACCEPT

# imap, imaps
-A INPUT -p tcp --dport 143 -j ACCEPT
-A INPUT -p tcp --dport 993 -j ACCEPT

Is there something really basic I'm missing here?

thanks in advance...