postfix: Asserting You’re Not a Spammer
October 5, 2026
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This is a companion piece to articles I wrote about configuring postfix & dovecot 2.4 to handle system and virtual users on a Debian Trixie
Category: Linux
postfix & dovecot: Detecting Spam
October 5, 2026
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Table of Contents This is a companion piece to articles I wrote about configuring postfix & dovecot 2.4 to handle system and virtual users on
postfix/dovecot Configurations
October 3, 2026
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I recently had to configure postfix and dovecot 2.4 on a VPS running Debian Trixie to handle both system and virtual users. This post shares
Adventures in postfix & dovecot
October 3, 2026
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Table of Contents Background I’ve run a Debian VSP on Hostwinds.com1 for years now. I use it to host a number of (infrequently updated) blogs
Dealing with Stalled Debian Upgrades
February 21, 2026
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I periodically encounter, when upgrading my Debian systems, situations where the upgrade process stalls. As I recall, this generally happens when upgrading initramfs, but I
Tightening Postfix/Dovecot
February 4, 2025
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I use postfix and dovecot to provide email capabilities on various blogs I manage. Recently, I noticed a large number of failed postfix login attempts.
Debian 12 Upgrade Gone Awry
January 19, 2025
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This story involves Debian 12, running on a VPS at Hostwinds.com. I was getting ready to spin up a new WordPress site and was doing
Changing WordPress File Upload Limits
July 2, 2022
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I can’t tell you how much time I’ve wasted over the years trying to get WordPress to accept larger upload file sizes. If, like me,
Virtual Dovecot Users
March 26, 2022
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I run dovecot on a VPS for remote IMAP access, with postfix as the underlying mail server. Originally, it handled mail for just one of
A Wee Bit More Dangerous…
January 26, 2022
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Five months ago I began running my first internet-facing server in ten or fifteen years. I’ve been running a number of blogs during that time,