Certificate of package repository expired

[Marc Weustink]

Hi,

I just happened to do an apt update and got a notice that 
repo.dovecot.org was disabled.

According to firefox:
repo.dovecot.org uses an invalid security certificate. The certificate 
expired on dinsdag 13 februari 2018 12:48. The current time is dinsdag 
13 februari 2018 16:39.


Thanks,
Marc