SMTP: Connection refused

[David B. Hughes]

Freeside 1.40 with Apache::ASP
Apache::ASP 2.37
Perl 5.6.1
RedHat 7.2 (latest updated rpms)
Sendmail 8.11.6-3
Postgres 7.2.1
DBD-Pg-1.13
DBI-1.30

All required modules we're checked off during install and then
I went over the entire installation after getting a successful
launch of the program.

This is an example of the mail error I'm getting:
"done: (customer # 5) can't send invoice email to a.winter at eaco.com via
server oracle.networkinghq.net with SMTP: Connection refused"

1. Sendmail is configured for relaying localhost, ip of freeside, and every
system on my local area network.
2. Relaying works with no errors from my workstation
3. I also added freeside, apache, postgres as trusted users
4. Freeside and Postgres are both running on the same machine as Sendmail.
5. Lastly I also tried my production server at my data "mail.cyac.net" and
still no luck.

Any advice would be great appreciated.

Thanks,
Dave Hughes