IBM Support


Technote (FAQ)


What does SMTP error XXX mean?


Proventia Network Mail Security and Lotus Protector For Mail Security have multiple options to reject messages during the SMTP communication. Messages are rejected with certain errors codes / error messages. This brings up questions like:

What does SMTP error message XXX mean?
Where does it come from?
Why is it rejecting?
How can I disable it?
How can I see it in the logs?

The attached table answers these questions.

Historical Number


Product Alias/Synonym

Proventia Network Mail Security
Lotus Protector for Mail Security

Document information

More support for: Lotus Protector for Mail Security

Software version: 2.5,, 2.5.1, 2.6, 2.8, 2.8.1, 2.8.3

Operating system(s): Firmware

Reference #: 1437369

Modified date: 17 October 2010

Translate this page: