My Exchange server is behind a Linux firewall with sendmail fronting the email handling. I started seeing messages in the maillog on the Linux machine like: dsn=4.0.0, stat=Deferred: Connection reset by <em>mailserver</em>. Following that were even odder messages from SpamAssassin:

This was all due to the added security of the Exchange Server installation (I […]

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Rebooted the server last night and the screen would not get past Applying computer settings… There seemed to be very light disk activity. I discovered that if I rebooted in Safe Mode with Networking and re-enabled the IPv6 on my Local Area Connection, the system would boot normally. I had turned it off earlier but […]

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