[quote=“username”]How are you going to write a comparison article when you are completely unfamiliar with Windows (not to mention applications that you want to write about)? That way you can only write biased articles - but then again, if you write for a Linux-focused site, I guess that’s what the readership wants.
Microsoft’s own MTA is SMTP Service and MS Exchange (which works as MTA). But there are many alternatives, some are very cheap.
MTAs like Postfix and sendmail, as the name says, are only MTAs and cannot be compared to groupware, forms, scheduling, MTA, MDA and other features (such as dedicated groupware client MS Outlook) of Microsoft Exchange.[/quote]
Sorry if I wasn’t clear, but I didn’t want to go into all the complicated details at the time. Anyway, I wasn’t writing an article to compare MS Exchange with Linux MTAs. I was writing an article about SPF, a new add-on protocol for SMTP. The purpose of SPF is to identify spoofed addresses, and thus control spam. In order to use it, a system administrator needs to patch the MTA. I know that patches are available for Postfix, Sendmail, Qmail, Exim and Courier. I was trying to find out if there was a patch available for all Microsoft MTAs, so I needed to know the name(s). Anyway, some further research revealed that yes, there is a patch for MS Exchange, but it’s not free (why am I not surprised?). The Linux patches are, of course, free.
Future versions of Linux will probably include the patch already built-in, eliminating the need to install it. I’m very doubtful that Microsoft will do the same because they are pushing their own “alternative” to SPF named “CallerID”. And of course CallerID is patented by Microsoft, so Linux users can’t use it. However, the ISPs are pretty cool to Microsoft’s proposal, so I don’t give it much chance of being accepted. SPF only works if everybody supports it, and MS Exchange has less than 1/3 of the mail server market.
If you have any interest in SPF, you can read about it on their web site: