Tag: networking

LetsEncrypt SSL certificates for vhosts within the mail stack – via Postfix (SMTP) and Dovecot (IMAP)

For a long time, I didn’t care about using self-signed SSL certificates for the mail stack because 1) they still secured the connection to the server, and 2) those certificates weren’t seen or utilised by anyone other than me. However, for my datacentre infrastructure which houses clients’ websites and email, using self-signed or generic certificates …

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Spam increase due to SpamAssassin Bayes database not available for scanning

For approximately the past six weeks or so, I’ve noticed an uptick in the amount of spam getting through (and delivered) on my primary mail server. At first the increase in false negatives (meaning spam not getting flagged as such) wasn’t all that bad, so I didn’t think much of it. However, starting last week …

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Amavisd crashes immediately on start with little in the logs

Recently I was updating amavisd and other portions of the mail stack on one of my mail servers (running Gentoo Linux). This particular set of updates didn’t go as smoothly as I would have liked primarily due to the acct-user/amavis package being created on Thursday, 13 February 2020 as a part of the ongoing effort …

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