RE: sendmail
Lol....
Job security.....not my blood pressure though when I get complaints that
a email didn't arrive 4 mins after it was sent....explaining to the VC
that email can take up to 5 days and is not guaranteed so he needs to
use fax does not go down well.......
;]
I have limited our email servers to 50meg max, the biggest complainer is
the security manager who should know better....150+ meg attachments
every hour! Silly sod...
Regards
Thing
-----Original Message-----
From: Alvin Oga [mailto:aoga@mail.Linux-Consulting.com]
Sent: Thursday, 11 August 2005 9:50 a.m.
To: Steven Jones
Cc: debian-user@lists.debian.org
Subject: RE: sendmail
On Thu, 11 Aug 2005, Steven Jones wrote:
> But Im not allowed to reject based on rbl's, we tried that and in NZ
> lots of companies use adsl and cable modems so we had huge issues and
> political flak. Such business broadband is being heavily sold by our
> major telco as a solution and trying to tell people who don't
understand
> how to manage the box on the end of their connection is hard work.
Those
> same people also have huge political clout as I have found out to my
> cost...
if you can't use existing rbls ..
- you can create your own local rbl of spam you did receive
instead of assuming that those that are in the various rbls
are in fact accurate which is not always the case
- other option for sendmail is to use:
- bayessian filter
- milter
- both of which is more than a minute of work like the rbl
entries
for sendmail.mc
> Stuff like not in dns and non-rfc compliance I can get away with
though
yup.. but even those can be tricky ...
MX records are not required to send/receive emails
sending hosts does NOT need to have reverse DNS to work
"work" means that the non-techie sitting in front of windoze-XP
and can send/recevie emails and giga-byte-attachments w/o any
problems
"work correctly" for techies can be flame bait ..
and as with all flame bait, is usually not worth the time on
either party other than a good blood pressure and patience test
> as I can justify it by telling the remote admins to go configure their
> server properly (though even that is hard work as those same admins
> complain to my higher ups about us being anal) spammers obviously wont
> ask......
not all users have the ability to "properly configure" tehir sending
mail
servers or that the admin knows what to change or where .. or how ..
spammers are not dumb ... they know exactly what to do to get around
any/all spam filters... they're always 1-step ahead of us ..
- worst case are soem of the hotels, that send mail out
as localhost to get around the CEOs (in)ability to send
outgoing mail on their laptop thru their corp servers
in which, the corp email servers, should reject hotel guests
from relaying emails from hotels thru the corp mail server
vpn would be better, but than, if the ceo can vpn from
the hotel room, so can the spammer ..
endless problems.. good for job security ..
c ya
alvin
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