Outlook 2003 (with Symantecs antivirus) - 3 mail servers were working fine, until last week. Now occasionally an email will not leave the outbox. There is no sending/receiving error message. I changed outgoing sending account trying all 3. None work. I checked outgoing email address - No problem. I tried turning Norton A/V scan outgoing email off - did not help. Other messages come and go. Occasionally one (now 3) gets stuck.
Any ideas?
Rob