If you are able to send the mail within the same server but getting problem in sending to the different domain server, then the article will help you in identifying this issue.

Checking the firewall

It is due to the configuration of the firewall in your system that often blocks the mail from sending and receiving on Bellsouth mail. To troubleshoot or diagnose this issue, contact Bellsouth support.

SMTP check

Check the port number of your Bellsouth email account. It should be 25. You will find a welcome message on the screen along with the version of Bellsouth installed in your machine. If the Firewall or proxy servers are not allowing the SMTP, then you will find a message, which shows, ‘Not connecting to the host’.

DNS configuration

If your message is sent by the server but still not delivered, then check the mail address and see if it is delivered correctly or not. You can check the SMTP debug and activity logs. You can follow the support links to fix the problem.

The mail utility will show the information on the domain and relay settings. For more information or a comprehensive report, you can go to DNSreport link.

Refused connection

While trying to send a mail, if it has been refused by the server, you will find the same in the log report. There can be multiple reasons behind this problem either the PTR record has not installed or problem with the IP address of the server.

Delivery delay notifications

If you are getting this notification on Bellsouth email screen, then there is some problem with the outgoing delivery. You need to check why you are getting this notification. You can use the Mail log analysis tool to identify the log file. You can check the detailed summary of your outbound queued message from Bellsouthemailsupport link.

Go to activity log to search for the mail address of sender who is receiving the delivery delay notification. From here, you can identify the root cause of the problem. Inspect the Bellsouth support SMTP outgoing queue and check the message ID.

Once you are able to locate the SMTP transactions of your Bellsouth email account, you can debug the log entries of the same period. The combination of both logs will help you in diagnosing the problem.

Client and Relay settings preventing mail send

This occurs due to the following reasons:

• Incorrect credentials.
• SMTP relay settings.
• Account Authentication not enabled on outlook.
• Allow relay for certified senders

When you enable the ‘allow relay for certified senders’ option, the active or enabled username and password clients will able to send mail to non-local mail address. So, to send mail to non-local addresses, an SMTP authentication should be enabled on the email client.

If you have not enabled SMTP authentication on your mail, then you will find error 503 on the screen. Check the mail settings and diagnose the issue.

If you are using Microsoft Outlook or outlook express, then SMTP authentication can be enabled from ‘My server requires authentication’ option. Click on the checkbox given next to the account settings. If you want to send the mail to local server by bypassing the username and password, then you can use a relay for privilege IP.

The username or login address must be in the following format: name@bellsouth.com.