I'm having an SMTP problem with a couple of my users. They are unable to connect to my outgoing mail/SMTP server. Everything else seems to work fine including POP3. They aren't being denied relaying they just can't reach the server. Other users aren't having any problems. The users that are having problems are using Outlook Express and get a network unreachable error code 10051 message. Has anyone else experienced this or a similar problem? Any suggestions would be welcome. Thanks.
