Exchange 5.5, had an open relay. Applied SP, some hotfixes, closed up the relay. But now internal Mac clients cant send email. How can I configure exchange to relay internally, but not from external ...

We're having problems with open relay on Microsoft Exchange Server 2000. We tried to shut down SMTP, clean out queues, turn off relaying, etc., but nothing worked. For a quick fix, we set up a ...

I posted here some time back about linux email servers. I now would like to ask about building a mail relay for exchange 2003. It seems that the two major mta's for linux are postfix and qmail. I ...