I'd like to offer my clients an email package(we offer both linux and windows hosting), that's ruthless on filtering out spam and viruses. In short, a home user / 'noob' safe package. Quite willing to spend a few £ / $ as well
From personal experience, what's the best software for both virus scanning and spam filtering?
We have found that best 'no brainer' method is to use the Spam databases. After sorting out which ones to use, as there many, our Clients have found Spam decreased approx. 90%+ compared to a previous Hoster who was not using the Spam databases.
Nothing the Client has to do and any eMail addresses that are Spam listed but still desired, it's easy to 'whitelist' those addresses so the eMail gets through.
As for Viruses, we're setup to only accept eMail attachments using: html, text or zip files. Anything else is bounced back to Sender with a msg. explaining why it was bounced and what to do, to have a successful send. This is done through Exim, our eMail software, and I would imagine most other Server eMail software allows for same.
Last edited by Website Rob; 03-30-2004 at 07:37 PM.
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A couple of those are redundant to each other and I also maintain a private set of black and whitelists containing the IPs of bad or good mail servers.
This provides a pretty good blockage of junk, but be prepared to have to open up a few IPs even though you've received spam or viruses from them, so always have a whitelist option.
On CPanel boxes I've found you can't use the RBL lists as easily since it ends up locking out clients from sending as well, especially the dynamic IP address blockers which work well since a good majority of spam is coming from there and almost all the viruses come from dynamic broadband ranges.
One way to get around the CPanel issue however is to relay their incoming mail via the Qmail system first.