http://blogs.technet.com/jks/archive/2009/03/04/how-to-deal-with-an-error-in-configuring-incoming-e-mail-settings.aspxLet me start with my first technical post about Email enabled Lists or Email enabled Document Libraries: Symptoms: Consider one fine day you decide to use e-mail enabled lists in SharePoint 2007. Then you configure "Incoming E-mail Settings" in the Centralen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/jks/archive/2009/03/04/how-to-deal-with-an-error-in-configuring-incoming-e-mail-settings.aspx#3229115Wed, 22 Apr 2009 13:01:31 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3229115JMSAM<p>I was blocked because this error. It worked for sites in one SSP but not in the other.</p> <p>I changed app pool identity as you propose and solved!!!</p> <p>Great detailed info!!!!!!!</p> <p>Thanks a lot</p>http://blogs.technet.com/jks/archive/2009/03/04/how-to-deal-with-an-error-in-configuring-incoming-e-mail-settings.aspx#3234194Sat, 02 May 2009 05:07:47 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3234194Jerry<p>Excellent information! &nbsp;You solved my problem.</p> <p>Thanks a bunch.</p>http://blogs.technet.com/jks/archive/2009/03/04/how-to-deal-with-an-error-in-configuring-incoming-e-mail-settings.aspx#3237158Thu, 07 May 2009 23:47:08 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3237158Peter<p>Fantastic -- the solution for situation 3 hooked me up!!! &nbsp;I really appreciate it!</p>http://blogs.technet.com/jks/archive/2009/03/04/how-to-deal-with-an-error-in-configuring-incoming-e-mail-settings.aspx#3276463Mon, 24 Aug 2009 22:50:13 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3276463Joel<p>Solution 3 fixed my problem too! &nbsp;Thanks for taking the time to post this for the benefit of others!</p>