I currently have an Exchange 5.5 server that receives it's internet mail from an IIS 5.0 SMTP relay.<BR><BR>Spam is an increasingly large problem, so I'd like to look at putting in an SMTP relay that ...

Subject does most of the work here, but I'll expand. [edit] Maybe if I had just RTFM'd harder I would've found my answers... I think this will help, but leaving the post up in case anybody else has ...

Microsoft has shared updated requirements for SMTP relay via its Exchange Online platform. The new updated requirement is not applicable yet and is set to roll out towards the end of the year.