About 8 out of every 10 mails I send receive an error message stating that the message could not be sent. If I go into the Outbox and click send "manually" the mail will usually go on its way. This is becoming a pain in the ass.
I am using settings that have worked for years. I first started noticing this after upgrading to 10.4.3 and the problem persists with 10.4.4.
I do not see my wife having the same problems with her Powerbook running the same network/ISP settings.
Thoughts?