Sking, we were able to resolve the problem. Turned out, that the distribution list was not configured to receive emails from outside the organization, only from inside. Allowing emails from...

Thank you, sking! If it's any help, I just found this on experts-exchange, unfortunately without much detail:

http://www.experts-exchange.com/Microsoft/Development/MS-SQL-Server/SQL_Server_2008/Q_26162648.html

Question:

Hi, I have database mail working fine except when I try to...

sking, I'm having exactly the same problem. Have you figured it out? I really appreciate any help...