Hi , I have searched the mailing list for answers to this problem , and even applied the resolutions , but still i am getting the following error : ERROR: OTRS-PM3-10 Perl: 5.8.8 OS: linux Time: Fri Sep 15 12:30:42 2006 Message: Can't send to: [email protected]! Enable debug for more info! Traceback (7920): Module: Kernel::System::Email::SMTP::Send (v1.9) Line: 97 Module: Kernel::System::Email::Send (v1.14) Line: 467 Module: Kernel::System::Ticket::Article::SendAgentNotification (v1.94) Line: 1582 Module: Kernel::System::Ticket::Article::ArticleCreate (v1.94) Line: 293 Module: Kernel::System::PostMaster::NewTicket::Run (v1.52) Line: 208 Module: Kernel::System::PostMaster::Run (v1.52) Line: 239 Module: main::FetchMail (v1.17) Line: 198 Module: /opt/otrs/bin/PostMasterPOP3.pl (v1.17) Line: 126 I added the CheckMXRecord = 0 to my Config (as suggested in one of the mailing list replies) , also this is quite odd as this particular email is being sent to an internal address. I am running SMTP on a Debian box which forwards the mails to Exchange Servers. Any help / suggestions will be greatly appreciated as I am at a loss :( Daniel