On Sat, 2003-09-20 at 17:10, Graham Watkins wrote: > Hi Y'all, > > This may not be strictly Mandrake related but as there's a smart bunch > of guys here, it seems a good place to ask. > > In the last few days, I've received about 20 or so returned mail > messages that bear no relation to any mails I've sent. > > This is a typical example: > > > > "Hi. > I'm sorry the message returned below could not be delivered to the > following addresses: > > > > Undeliverable mail to [EMAIL PROTECTED] > > > Message follows:" > > (No message follows) > > > The disturbing possibility occurs to me that my box is being somehow > used to relay spam. Is there any way I could check? Have you guys come > across this? If so, how did you deal with it? > > Although I claimed off topic status for this, if it is the result of > spam relay, it does have security implications for Mandrake. > > I'm using Mandrake 9.0, and getting my mail with mozilla 1.1. I'm > running shorewall (although I don't really understand it enough to > fiddle with it) and Clam Anti Virus shows no infections. > > The group's advice would be much appreciated.
There are ways of using a box as a relay - but you might want to double check your POSTFIX setup/configuration; mine was being used for a short while after I made some changes to SENDMAIL (cuz I don't use POSTFIX) and I kept finding emails in my system's outbound queue that weren't anything sent by me - it was a relay...so just a few changes to allowable outbound domains (actually I got rid of everything in there so NOTHING was a relay-trusted domain) and no mo probs. Bear in mind that Charlie M's explanation of how Outhouse/Lookout is able to "spoof" things is also holding true right now...so just check everything to be sure. stephen kuhn - owner ============================== illawarra computer services a kuhn media australia company http://kma.0catch.com ------------------------------------------------------------------ * This message was composed on a 100% Microsoft free computer * We expressly refuse to utilise Microsoft DRM encoded documents ------------------------------------------------------------------ Love is what you've been through with somebody. -- James Thurber
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