We are just testing Imail 6.02 and are experiencing some heavy WEB use. I
am anxious to hear reply's regarding different methods of SMTP abuse and
virus attcks.
So far, we have been successful in stopping inbound and outbound viruses
(POP3 and IMAP users) by using a dedicated box for relaying and using
Network Associates WEB SHIELD. However, this does not stop virus 's that
are 'sent' by the web user to another web user on the same Imail box. We
were unsuccessful stopping viruses using Network Associates NT Sheild on our
server. (perhaps Norton's will work???)
We hope that the use of a dedicated relay will allow us to set up a wider
range of parameters to stop spam and to free up the neccassary resources for
heavy web usage.
Ric Smith
Network Designer
Indian Prairie Community School District #204
From: Don Schreiner <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, February 06, 2000 9:36 AM
Subject: [IMail Forum] SMTP abuse and VIRUS Attacks
> Dear Imail UG Gurus,
>
> We are fairly new to Imail. Installed 5.08 a few months back for multiple
> domains and recently upgraded to 6.02. We heavily use Web Mail for these
> domains. All has been well so far! However, I am very concerned about
SMTP
> abuse and VIRUS attacks, and want to be proactive. We are behind a
firewall,
> however not really tweaked any specific settings regarding our e-mail
ports,
> etc. Any feedback from the IMail gurus is most appreciated.
>
> 1) Is there anyone or entity whereas we could obtain a list of known "IP
> addresses" who have a history of scanning and finding e-mail server SMTP
> addresses, and then using them for SPAM without permission?
>
> 2) In relation to the above question - what is the best way to configure
> IMail to defend against unauthorized users of the SMTP service? I read
that
> enabling reverse authorization DNS look-up is one way, however does this
not
> significantly reduce performance?
>
> 3) What is the best way to defend against Virus attacks attached to
e-mails?
> We run Network Associates NT Sheild on our server, which supposedly does
> scan everything coming into the server. However, I am not so sure how
well
> it does with e-mails?
>
>
> Best Regards,
>
> Don Schreiner
> - - - - - - - - - - - - - - -
> Powered by EZWEBonline.com
> Division of CompBiz, Inc.
> An Allaire Technology Partner
> 407-322-8654
> 800-408-3688
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
Please visit http://www.ipswitch.com/support/mailing-lists.html
to be removed from this list.
