Runterwählen ist kein Gegenargument.
[Verifying my cryptographic key: openpgp4fpr:941D456ED3A38A3B1DBEAB2BC8A2CCD4F1AE5C21]
OpenSMTPD is the default OpenBSD “sendmail”
Not quite. OpenSMTPD is OpenBSD’s default smtpd
though (and it is portable!).
Rspamd - basic spam filter
It can be configured to be rather complicated if you wish. :-)
tips hat
Ahh, the husband of Incontinentia Buttocks!
A viable alternative is Guix, which uses Scheme for its scripts and could also use the Hurd kernel instead of Linux, but works the same.