Category Archives: Linux

Stuff about the superior OS

Solution: Using ProxyPass from http to https in apache2 causes AH02032 SNI error

I got this error message on the internal.server.host when forwarding an URL from an extrernal HTTP server to an internal HTTPS server: AH02032: Hostname internal.server.host provided via SNI and hostname external.server.host provided via HTTP are different The problem turned out to be that the internal server was trusting the external one’s X-Forwarded- headers, a feature […]

dovecot: master: Error: systemd listens on port 143, but it’s not configured in Dovecot. Closing.

Upgrading a mail server from Debian Wheezy (7) to Debian Jessie (8), the following errors were observed in the mail.error log: dovecot: master: Error: systemd listens on port 143, but it’s not configured in Dovecot. Closing. dovecot: master: Error: systemd listens on port 993, but it’s not configured in Dovecot. Closing Looking for solutions, I […]

Writing a newline to separate commands in XChat

Just learned something neat: In XChat, if you hold ctrl and shift, and then press “u”, followed by “a”, you get a weird character that signifies a line break. This can be used to put several commands on one line in the configuration, or to type several lines before spamming them all at once into […]

Make exim4 on Debian respect .forward and /etc/aliases when using a smarthost

When configured to send all mail through a smarthost, exim4 on Debian will not respect your /etc/aliases file, nor will it care about your users’ ~/.forward files. This is due to the numbering, and consequently the sorting, of the files in /etc/exim4/conf.d/router/. If you look at 200_exim4-config_primary, you’ll see it handles smarthost routing in smarthost […]