Is there a limit on the size of files that Declude/F-prot will scan? Does it matter how big the files are?
Thanks again! Sam -----Original Message----- From: R. Scott Perry [mailto:[EMAIL PROTECTED]] Sent: Thursday, January 31, 2002 11:43 AM To: [EMAIL PROTECTED] Subject: RE: [IMail Forum]Virus protection > > I am considering purchasing Declude before the prices go up tomorrow or the > > day after. >How much of a hit does this make on the server? That depends mostly on the volume of mail that you are scanning, and also on a few other factors (such as what percentage is just plain text, which doesn't need to be scanned, and how much is from IMail mailing lists, which only needs to be scanned once, and your server). As a general rule of thumb, you should be able to scan up to about 50,000 E-mails/day on a typical server (one 500MHz CPU) without a performance hit (although you'll likely notice higher CPU usage in the Task Manager at that volume). A faster CPU will allow proportionately more mail to be scanned. Declude Virus Pro has a pre-scanning feature that will increase performance, by preventing most HTML E-mail from needing to be scanned. Many mail clients are set up by default to send both text and HTML, even though the user may only enter text with no colors, underlining, or other HTML features. This mail normally needs to be scanned, because it could contain a virus such as Kak.worm. However, with the pre-scanning, Declude will allow safe HTML to go through unscanned. Any HTML that could potentially be dangerous (such as Javascript, Active-X, plug-ins, etc.) will still be scanned. >Will it slow things down because it is checking every message for a virus? Technically, yes. Any extra software running on the server will slow things down. It's just a matter of whether or not it is noticeable. If you're dealing with less than about 10,000 E-mails/day, you almost certainly won't notice that Declude Virus is running. If you're dealing with higher volumes, you'll may start to notice the extra CPU usage in the task manager, but won't notice a performance hit until you're around 50,000 or higher (more with a faster CPU and pre-scanning). With a dual 1GHz CPU, you could scan hundreds of thousands of E-mails per day. >What happened to the performance on email and server after Declude and >F-Prot were installed? Hopefully, one of our customers will comment on a real life scenario, rather than just my more technical and theoretical answer. -Scott --- Declude: Anti-virus, Anti-spam and Anti-hijacking solutions for IMail. http://www.declude.com --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
