Bellsouth (AT&T)


Bellsouth is one of the ISPs currently owned by AT&T. One of the visible differences is that bulk foldering for Bellsouth domains is highly correlated with bulk foldering at Yahoo.

Delivering to Bellsouth

There are no published limits for connection or sending limits. There does seem to be a limit on the number of unknown users any sender can attempt, and sending to too many non-existent addresses will cause rate limiting by Bellsouth.

Important links and references

Postmaster pages

Bellsouth shares the AT&T postmaster pages with information about bounce codes and blocking. They also provide information for other receiving sites, including a list of their outgoing SMTP servers.

Feedback loop

Bellsouth does not offer a FBL.


Bellsouth does not offer a whitelist.

Certification Services

Bellsouth is not currently known to support any certification services.

Support for Senders

Bellsouth provides minimal support for senders. Senders who have email blocked at Bellsouth can follow the URL in the rejection message, or visit their unblocking page [^1]

Known spamfilters

Not much is known about commercial spamfilters in use at Bellsouth. They do appear to be using Yahoo’s reputation engine for bulkfoldering decisions, but no other information is currently available.


Updated 3/12/2014

Recent Posts


Follow Us