Knowledge Base

SMTP: Err Msg: SMTP_recv:protocol error

Article ID: 100704

Article Last Modified on 10/30/2006

Microsoft Mail Gateway to SMTP 2.1
Microsoft Mail Gateway to SMTP 3.0

This article was previously published under Q100704

SYMPTOMS

Versions 2.1 and 3.0 of Microsoft Mail Gateway to SMTP may display this error message:

SMTP_recv: protocol error

CAUSE

This indicates an error at the TCP or IP layer.

RESOLUTION

Send the message again. If the error occurs frequently, check the network with a protocol analyzer to determine the exact problem.

Additional query words: 2.10 3.00 errmsg alert

Keywords: KB100704