Good Afternoon All.
I recently tried changed my SMTP server to a new third party. I was previously using Go Daddy's SMTP service and it was working fine. This new company is able to handle more traffic but i cant get apex to send properly. I keep getting ORA-29278: SMTP transient error: 421 Timeout - closing connection.
Here are my apex instance settings

Here is my environment:
Oracle 18c
Apex 19.1
CentOS 7
ORDS setup with Apache/Tomcat
Here is what I am sure of:
-I have the firewall opened on 2525
-these values do match the values given from the third party
-I have ACL connect privs granted to apex_190100
-I can successfully send a test email with these same settings via smtper.net.
-I can also successfully send a test email just within the linux environment via echo "Your message" | mail -v -s "Message Subject" xxxxxxx@gmail.com
using these settings in the config file:
set smtp=smtp-pulse.com:2525
set smtp-auth=login
set from=notification-no-reply@xxxxxxxxxx.com
set smtp-auth-user=xxxxxxxx@gmail.com
set smtp-auth-password=xxxxxxxxxx
So this seems to be an oracle/apex thing. Does anyone have any idea why I cant send emails via Apex_Mail.Send???
Any help or suggestions is greatly appreciated