Re: monit and sendmail

[hans]

On 8/23/06, Jim Popovitch <address@hidden> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Jan-Henrik Haukeland wrote:
> > Oh man, not much we can do in monit then, short of actually sending a
> > mail? Please let us know if you find a solution we can implement.
> >
> > Or take a look here, http://www.postfix.org/ :-)
>
> Same issue exists with postfix as w/ sendmail.  ;-)  The bigger issue is
> that just reaching the SMTP server isn't really a good indication of a
> running email system. Sending an email that is received, distributed,
> collected and verified is a much better solution.  As an example, if DNS
> is down (or slow, or working but not forwarding, etc.) an initial SMTP
> connect from monit might succeed, but sender verification would fail.
So you should check dns conection y mail queue length to prevent that.
> In that case monit would show SMTP as available, however email could be
> blocked.  A complete full-circle check would be a very powerful feature,
> however it should probably only require monit to have the capability to
> check an mbox file that is populated via some external process
> (fetchmail, sendmail aliases, etc.)
But...
if you send a email to address@hidden, then monit send and recive
the email, so service will be fast and almost allways will never fail.
All return codes OK.
if you send a email from address@hidden to address@hidden and it
should return to address@hidden, cuz this mail have to pass some
antispam-antivirus servers , It will depend on the mail-s arquitecture
that you have, you could recieve an false-negatives cuz the mail
server 3 its slow. And monit from localhost will never know that its
the mail server 3 slow and will think that its a localhost problem.
So. When i start to use monit to check mails servers (that use
sendmail or postfix )i realize that something like you propose its not
a good check option. So i check procces, tcp port y mailqueue.
Its just a point of view.
Bis Bald hans.
> - -Jim P.
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.2.2 (GNU/Linux)
>
> iD8DBQFE7JbGMyG7U7lo69MRAq+BAKC8QVSpbnFK4+ouHqfkDwFxwVH4awCcCpms
> tKYVLGjOyfcBXb/KA3E6j2I=
> =SYEc
> -----END PGP SIGNATURE-----
>
>
> --
> To unsubscribe:
> http://lists.nongnu.org/mailman/listinfo/monit-general


--
-------------------------------------------------------------------------------------------------------------
/"\ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
\ /   ASCII Ribbon Campaign  . Windows: "Where do you want to go today?"
X  - NO HTML/RTF in e-mail  . Linux: "Where do you want to go tomorrow?"
/ \ - NO Word docs in e-mail . BSD: "Are you guys coming or what?"
-------------------------------------------------------------------------------------------------------------