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How to Disable the SMTP Filter or SMTPS Filter on ISA Server 2006 at the Organization Level

 

Applies to: Exchange Server 2007 SP1, Exchange Server 2007

Topic Last Modified: 2007-09-25

This topic explains how to resolve the problem of inbound Internet e-mail messages that are stuck in queues on the Edge Transport server when the Edge Transport server tries to send mail through Microsoft Internet Security and Acceleration (ISA) Server 2006, with Simple Mail Transfer Protocol (SMTP) filtering or Secure SMTP (SMTPS) filtering enabled, to internal Hub Transport servers. For more information about what causes inbound Internet mail messages to be stuck on Edge Transport server queues, see Messages Queue on an Edge Transport Server with 500 5.1.1 Unrecognized Command Error.

The following procedure explains how to use Microsoft Management Console (MMC) in ISA Server 2006 to disable the SMTP or Secure SMTP (SMTPS) filter if it is enabled on ISA Server 2006 at the organization level.

After you disable the filter at the organization level, you must disable the SMTP or SMTPS filter on the Mail Server Publishing Rule on ISA Server 2006 to clear the inbound Internet mail queues on the Edge Transport server. For more information, see How to Disable the SMTP Filter or SMTPS Filter on Firewall Policy Rule on ISA Server 2006.

To perform this procedure, the account you use must be delegated ISA Server Enterprise Administrator permission.

  1. In the console tree of ISA Server Management, expand the Enterprise node, and then click Enterprise Policies.

  2. On the Toolbox tab, select Protocols.

  3. In the Protocols list, expand All Protocols.

  4. Right-click SMTP Server, and then click Properties.

  5. On the Parameters tab, clear the SMTP Filter check box.

  6. Click OK, and then in the details pane, click Apply to save the configuration changes.

    noteNote:
    If you filter SMTPS traffic, right-click SMTPS Server in step 4, instead of SMTP Server.
 
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