Error Message: SMTP Command Exceeded its Allowed Length (312213)


The information in this article applies to:

  • Microsoft Windows 2000 Server
  • Microsoft Exchange Server 5.0
This article was previously published under Q312213

SYMPTOMS

You may receive the following Event ID 240 error message:
SMTP command exceeded its allowed length

CAUSE

This issue may occur if your Microsoft ISA Server-based computer has an SMTP Application Filter that is turned on. Exchange Server 5.0 sends a NOOP SMTP command when it sends SMTP mail. The default SMTP filter value for NOOP is 6.

RESOLUTION

To resolve this issue, increase the SMTP command for NOOP in the ISA SMTP application filter to 1,024.
Modification Type:MajorLast Reviewed:10/21/2003
Keywords:kberrmsg kbprb KB312213
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