Tag: mail

OpenSSL 3 Dovecot error Failed to initialize SSL server context – dh key too small

Recently on one of my personal servers, I upgraded OpenSSL to 3.2.1 and everything seemed to go smoothly. However, I then noticed that though my Postfix MTA (Mail Transfer Agent) seemed to be working, I didn’t get any updates in my email client. That, to me, indicated a problem with my Dovecot MDA (Mail Delivery …

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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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