Hi all,

a couple of spam email messages got passed our spamassassin scanner today, and on investigation I found some odd behaviour. Our mail system scans via a pipe using the following command "/usr/local/bin/spamc -u mailnull". If I cat the spam mail file in question by doing a cat and pipe into this command it instantly returns the message unmodified. If I test another email message, it scans it for a few seconds then outputs the modified mail with updated header showing spam score. I also tested running the spamassassin command on the mail which is getting passed, this correctly marks the mail as spam.

The dodgy email contains an attachment, if I make a copy of the mail file and delete the email attachment and then scan via scanc it IS correctly processed and marked as spam. The file with attachment is only 600K so I dont see why this should cause a problem.

Any idea what would cause this behaviour?

thanks in advance, Andy.





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