I came across this today and thought it was a good example of a service availability reporting system: www.fastmailstatus.com.
Category Archives: Sys Admin
dovecot IMAP not working on iOS because of Let’s Encrypt certificate problem
So I was having an issue with the mail app in my iPhones not being able to get IMAP email from my dovecot server.
Turned out I needed to change my dovecot config from this:
ssl_key = </etc/dovecot/mail.{{ domain }}.key
ssl_cert = </etc/dovecot/mail.{{ domain }}.crt
ssl_ca = </etc/dovecot/mail.{{ domain }}.chain.pem
to this:
ssl_key = </etc/dovecot/mail.{{ domain }}.key
ssl_cert = </etc/dovecot/mail.{{ domain }}.chain.pem
Observability and You
This via tilde.news today: Observability and You — Keith Gregory, a discussion of what and why for observability.
How do I turn on the Do Not Track feature?
systemd-tmpfiles
Today I learned about systemd-tmpfiles which can be configured with files in /etc/tmpfiles.d.
Installing Zabbix from source
So I’ve had a bit of a go at installing Zabbix from source. I think I got there in the end, but I’m not sure how to auto-start the service… yet.
How to create a file and mount it as a filesystem
As seen over on How do I create a file and mount it as a filesystem? the answer is that you need to use the -o loop option:
mount -o loop /path/to/file /path/to/mount
How to restore Okular to visible Menubar
I found How to restore Okular default (toolbar) settings, and the short answer is press Ctrl+M.
Postfix SMTP-AUTH 4 DUMMIES
Some notes on how to configure Postfix: Postfix SMTP-AUTH 4 DUMMIES.
Dovecot SASL
Here’s some info about Dovecot SASL. I integrate this facility for Postfix authentication too. So my SMTP system has a dependency on my IMAP/POP3 system. In the backend it’s a MySQL database…