Exchange 2010 POP3 mail problem.
Posted on 2011-09-29
New installation of Exchange 2010 on a 2003 domain with an existing Exchange 2003 server.
Some users are moved to the Exchange 2010 server.
POP mail is enabled and the service is running on the Exchange 2010 Server.
Users can't set up POP mail, get this error:
Log onto incoming mail server (POP3); Your e-mail server rejected your login with Secure Password Authentication (SPA). Verify the account properties in Account Settings.
If I try it without SPA I get:
Log onto incoming mail server (POP3): Your e-mail server rejected your user name. Verify your user name for this account in Account Settings. The server responed: -ERR Command is not valid in this state.
The username is in the form domain\username and I'm sure the username/pw are correct.
Thanks for any help on this.