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I trying to select a best mail server product to install and configure a commercial mail server in public. I got four names
By concerning security as a main point, How guys rate thease and wht were the expeinces with thease?
I there any other free product?
Pls senior Gurus, send a comment...
Recent versions of *ALL* of these have very good security. Sendmail & Postfix are the most widely used, and thus the best choices. By default I'd go with Postfix as it is the current prima-donna; otherwise go with Sendmail if you need extreme configurability (and you will pay the price in configuration complexity).
Distribution: Red Hat CentOS Ubuntu FreeBSD OpenSuSe
All of them are good. The security lies on your security policy implementation. If you use sendmail with open relay and postfix close, then postfix has the better security.
Consider also the bulk of incoming of outgoing emails, I experienced qmail a little bit faster than sendmail, but if there are bulk emails, thousands Im saying, I could say sendmail can better handle this. It's just my experience. I know some will not agree. One more thing qmail is not RFC compatible
Distribution: Debian Based only but have tried most others.
I think as security goes you we be ok with any of them. I suggest postfix and I have found it to be the easiest to administer. I have used sendmail in the past but we moved on so long ok I don't remember much besides needing to turn run some command on the config file after changes so sendmail could read it. It worked much like lilo did. I know a good number of mail/spam appliances use postfix so thats a good sign for security.