I wish I could find an UNBIASED comparison of the main MTA's. I just seem to find ones that slant to the one that just happens to be used by the writer.
Not possible? Those who bother to reply have probably had a variety of experience and settled on what they thought was best for their situation. For them to express anything other than recommendations (mostly) for their selection would be .. illogical ... Kirk!
It is possible. The problem is whether others will allow their prejudices to cloud whatever is recommended. eg: some would never install qmail even if it is the best for that particular situation and tell everybody else so too.
And those who replied and had not selected one and/or had not practical experience but only analytical comparisons are not the ones you want to here from.
Oh yeah. For that reason I have nothing to say about exim.
Ergo, it is not possible for you to get an unbiased recommendation in which you can have confidence.
let's see.