[unisog] What Email Attachments Do You Block?

Barry Lynam b.lynam at qut.edu.au
Wed Jul 25 00:26:35 GMT 2001

There seems to be a lot of people using Sophos.  How do people keep the virus
definations an dpackage up to date in UNIX?  We have done something but I'm
interested in how other people do it.

Barry Lynam

Mark Borrie wrote:

> We do not block any types of attachments as we do not want to get into the
> debate on what are valid ones to block etc.
> If the reason for blocking certain emails is due to viruses then I suggest
> scanning the email for viruses.
> We currently scan most email on and off campus for viruses using inflex
> (http://www.inflex.co.za/) and sophos (http://www.sophos.com). Sophos is
> very good at detecting viruses, while inflex is a bit unstable in some
> situations. I believe Sophos is working on a sendmail module.
> We use 2 linux servers as our mailhubs. One is a single processor 700 MHz
> system and the other is dual processor 850 MHZ (or there abouts). These
> hubs take a huge load off our actual servers and simple relay the mail onto
> the correct server. By some DNS and router configuration we can ensure that
> all mail to and from a particular server gets scanned.
> Yesterday we had over 75 000 mails through the hubs. I think that may have
> been a slower day.
> Mark.

 Barry Lynam                            Phone: +61 7 3864 9408
 Senior Network Engineer, Security        Fax: +61 7 3864 2921
 Network Management                    Postal: I.T. Services
 Information Technology Services               Margaret St Offices
 Queensland University of Technology           GPO Box 2434
                                               Brisbane QLD 4001
 EMail: B.Lynam at qut.edu.au                     AUSTRALIA
If you haven't got time to do it right, will you have time to do it again?

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