Hernan, > How can I block a mail depending of the subject ?? This is > for blocking messages with viruses, for example a message with > the subjet: "Re: Your files" belong to a virus, I have a list > of all the posibles subjects, how can I block this subjects ???? > one by one or all once ?
You could have a check in filter_begin or filter_end which checks the subject against a list of regular expressions. Having said that - Don't do it. You'll never keep up with the polymorphic viruses, variants, and so on, and you'll also block messages with no attachments just because they have subjects which match your list. A classic example is blocking messages with a subject of "Hello" - this includes MyDoom and several other viruses, but in my experience also catches two or three messages per week which are valid. If you want to stop viruses, use the bad extension rule, block all potentially executable files, and USE A VIRUS SCANNER. With Mimedefang and Clamd, you have no excuse for not scanning every attachment - it's free and reasonably quick. Best Wishes, Paul. __________________________________________________ Paul Murphy Head of Informatics Ionix Pharmaceuticals Ltd 418 Science Park, Cambridge, CB4 0PA Tel. 01223 433741 Fax. 01223 433788 _______________________________________________________________________ DISCLAIMER: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to which they are addressed. If you have received this email in error please contact the sender or the Ionix IT Helpdesk on +44 (0) 1223 433741 _______________________________________________________________________
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