Solved Can local computer virus send emails with knowledge

May 4, 2012 at 06:45:19
Specs: Windows 7
I am a web developer who has a customer who host's on my virtual server. Over the last two months they have been blacklisted numerous times. Scans ran on the server find nothing. The most recent returned header sent me to

IP Address ##.7#.#8.1#2 is listed in the CBL. It appears to be infected with a spam sending trojan or proxy. (I erased part of the ip)

It was last detected at 2012-04-30 14:00 GMT (+/- 30 minutes), approximately 3 days, 3 hours, 59 minutes ago.

I talked with tech support for my server and so they say that since the ip address belongs to the local machines in their office that one or several of those computers must be infected and must quietly be spamming. Would the mail server people not see this? Is this really possible? NO ONE in their contact lists are receiving anything odd from them.

I want to make sure I return a proper answer to my customer, since we have now been dealing with this for 2 months. Any help would be appreciated.

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May 4, 2012 at 09:34:02
✔ Best Answer
Well, yes. A virus on a PC can be quietly spamming; and if it's got any sense it won't be sending to addresses in the contact lists as this might be a bit of a giveaway as to the origin. I don't think the mail server people would notice; they just relay mail, they don't inspect it.

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