I am trying to setup SQL mail and I am getting errors 17903
(MAPI Login failure) and 17951 (Failed to start SQL Mail Session).

There is Exchange 5.5 and SQL 6.5 installed on this server. I
have the MSSQL Service logging in as me, Jim Elden. I setup an
Exchange profile called Jim Elden, and indicated this in the SQL
Mail Configuration.

What else can be wrong?

Thanks!

Jim