IP-Blocking - how?

I receive at least 5-6 virus infected emails daily from different fake addresses, but all come from the same IP. Is there any way to block and return all mails from that particular IP? I am using Outlook Express.

There are several IPs in the e-mail headers .Are you sure that IP is not just the IP of your ISP's proxy or something like that? Ensure that the same IP doesn't appear in other, valid e-mails as well before you apply any filters.

No, I checked that. Only the virus infected mails come from that certain IP (Received: from csabagepe.org [68.84.232.135]).

I'm afraid that's not possible with OE.

Mozilla Thunderbird has a built-in, trainable spam detector, which would learn to pick those up in no time at all. Might be worth switching to.

You can also use something like Spampal (http://spampal.com) to collect and filter your mail. I used this for several months on one spam affected email account and found it very good. It works with OE but I would still recommend switching to Thunderbird as a better option.

Ok, I'm not sure how to set it up on a client, but I've had a lot of luck running SpamAssassin(SA) for the school system I'm a net admin for.

SA has a simple text file to edit to add rules like blocking an IP address to. Works wonderfully, IMHO. Also, it has very little overhead... read my post below to see what I run SA on to filter for 3,500 mailboxes...

http://spamassassin.apache.org/

If there are any system admins in the audience, I'll recommend a HOWTO I did on setting up a mail relay system to filter spam. Its written for Exchange, but it could actually be any MTA on the backend...

http://forums.gentoo.org/viewtopic.php?p=1477387