Why may be forged?

Hello, This morning I sent a message from my system at home to my user account with my provider. When I looked at the headers I noticed the following received header line: from duinheks.nl (duinheks.nl [82.95.255.219] (may be forged)) by smtp-vbr1.xs4all.nl (8.13.8/8.13.8) with ESMTP id

Re: How to stop these fakes?

Hallo ram, Op vrijdag 01 augustus 2008 schreef ram aan [EMAIL PROTECTED]: Occasionally external systems are tying to send mail with a faked sender address via my system. So far no harm is done, ad they have not been able to create a real user name. But I would like to stop them before

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