Debugging MailScanner: cleaning messages

Last week I did a short post on testing MailScanner to be sure it was scanning properly. An alert reader pointed out that I missed the easy solution, which was to simply use 'MailScanner --lint' to check if MailScanner was running properly. Since I wrote that article, I found that my MailScanner was again hogging the CPU. Last time it was an issue with f-prot interaction, this time it is a problem apparently with MailScanner. Here is what I did to debug this issue, and here is the post that helped me learn more about MailScanner.

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Email status messages - what do they mean

With one of my clients I need to monitor email bounces from our mailing lists. Normally this goes relatively smoothly, as either the email goes through, or it bounces back with a 550 Recipient not found message. Sometimes the messages I get back are less familiar to me. Here is the appendix from RFC1893.

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Limiting sendmails Max Recipients

There have been a lot of attempts lately on peoples servers to send spam through online forms. This is done by creating a crafty email with a carefully placed Bcc: tag which is then remotely…

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