BTW, I don't like sendmail, prefer Postfix instead.
Everyone has his favorite, of course. That's why we shouldn't be app-specific.
Personal preferences aside (I am almost to the point of despising
Sendmail myself), I believe there is still merit in considering Sendmail by default for BSD certification tracks.
o It is part of the base operating system for at least FreeBSD and OpenBSD (never used any others.) OpenBSD goes so far as to include an optimized/hardened fork of it with their system. Other MTAs are available as ports or packages at best and need to be retrofitted into the system using mailwrapper or other modifications. o It is arguably the most ubiquitous piece of application software in BSD servers in history. o It is still the #1 MTA on the Internet even though so many people claim to dislike it. o It is undoubtedly the most capable and featureful MTA available. o You can't run from it. It's always going to be there. You may not use it now or like to use it ever, but chances are that future employment will put you in a position where you must know it.
I think its slightly unfair to harp on sendmail for being application specific any more than it is to call foul on CVS, for example. You HAVE to know and understand CVS to maintain your BSD systems (in one form or another) although you could say that it is application specific along with Subversion, RCS, CVSup or others.
So yes, while I agree that it is application specific knowhow, my opinion is that Sendmail needs to be considered part of the core knowledge for BSD systems management.
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