Microsoft Exchange or SMTP Very Slow with Proxy Packet Filtering Enabled (176947)
The information in this article applies to:
- Microsoft Proxy Server 2.0
This article was previously published under Q176947 SYMPTOMS
Microsoft Exchange Server or other third-party SMTP servers may act
sluggish or very slow when you install them on the Proxy Server
version 2.0 computer with packet filtering selected (enabled). The
mail delivery to and from the Internet may take several minutes or
fail completely.
CAUSE
The packet filtering feature of Proxy Server 2.0 may be blocking
the Identification Protocol (Identd) requests from the Internet.
Some mail servers try to use the Identd protocol to identify other
mail servers on the Internet.
RESOLUTION
The predefined filter for Identd needs to be added.
- Open the Winsock Proxy Service Properties and select the Service tab.
- Under the Shared Services section, select Security, and choose Add.
- Select the Identd filter from the list of predefined filters. This
will allow Identd traffic to pass through instead of being discarded
by the proxy packet filter driver.
MORE INFORMATION
More information on the IdentD (Ident or Ident) protocol can be found
on the Internet in RFC 1413.
| Modification Type: | Major | Last Reviewed: | 12/6/2000 |
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| Keywords: | kbFAQ kbinterop kbprb KB176947 |
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