==== Required information ====
- iRedMail version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Linux/BSD distribution name and version:
- Related log if you're reporting an issue:
======== Required information ====
- iRedMail version: 0.8.7
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: Ubuntu 14.04.1 LTS
- Related log if you're reporting an issue:
====

Why would my server be refusing connections?
>> mail.myserver.com[X.X.X.X]:25: Connection refused)

I am using a spam filter where i point my DNS to their MX servers, they screen it and then all the email comes to me from their IP address.  But I can't find anything that should be limiting connections from their IP address.
Some messages are delayed for hours (sometimes 12 hours) and other mail comes right in.  I don't understand what is happening and the "connection refused" is all the info I'm getting from the spam company.

The server load is low.  I haven't added any throttles, unless they are there by default.

Any ideas on what is behind refused connections?

Thank you!