[CentOS] Confusion over sendmail and smtp auth on a 6.2
gbraun at b-m.com
Fri Jan 27 12:33:53 EST 2012
While certainly Centos 6.2 specific, I found the following How-tos very
helpful in setting up a similar Sendmail/Dovecot configuration on Centos.
Hope it helps.
> I'm reading a lot on how to setup my smtp auth on a new Centos 6.2
> server. I want to use sendmail and have this running on a Centos 3
> machine now, so it's not new stuff to me.
> Unfortunately, the more I read, the more confusion I seem to have.
> Firstly, how to generate my certificates. A good recommendation or howto
> would be in order. I think most of the confusion here comes from the
> commented names of files used in sendmail.mc for all the auth files. As
> far as I can tell, the encryption length is the only change I need
> (going to a minimum of 2048 bits) from the old system generation. Those
> "pem" files throw me a bit, though.
> Secondly, I'm reading DoveCot has a problem with security and that I
> need to run something other than ? (Cyrus, Courier, etc) to make this
> work. I typically don't run imap security, only on smtp, so I'm not sure
> if there's to be interference between the two. Since postfix is the
> default now on Centos 6.2, what should I look for by changing it back to
> sendmail when it comes to smtp auth?
> I only authenticate users that are not in the building on our network to
> allow them to send email. They're free to use pop or imap to retrieve
> their email without authentication.
> Thanks for any clarity on this.
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