Hmmm.. I'm starting to think that the problem is not really to do with SMTP in particular.
I have a feeling my SME box might be on its last legs...
Everything seems to be soo sluggish. SSH, server-admin, they are all taking a long time, and even web access is a bit hit and miss.
Anyway to troubleshoot the problem? I'm ready to just make it a server only and let my modem/router do all the web work...
Tristan