Delete sendmail mail queue

I am sudo user pedro on this little cloud server using Ubuntu 22.04 Server

I am trying to delete the mail in the sendmail mail queue, but the file permissions are:

Quote:

pedro@ubuntu:/var/spool$ ls -l /var/spool/ total 16 drwxr-xr-x 3 root root 4096 May 18 02:08 cron lrwxrwxrwx 1 root root 7 May 18 02:08 mail -> ../mail drwxr-s--- 2 smmta smmsp 4096 Oct 17 06:41 mqueue drwxrws--- 2 smmsp smmsp 4096 Oct 17 06:31 mqueue-client drwx------ 2 syslog adm 4096 Dec 30 2021 rsyslog pedro@ubuntu:/var/spool$

I can't touch the mail queue!

First I stopped the sendmail service, then tried to delete:

Quote:

pedro@ubuntu:/var/log/apache2$ sudo rm /var/spool/mqueue/* rm: cannot remove '/var/spool/mqueue/*': No such file or directory pedro@ubuntu:/var/log/apache2$ cd /var/spool/mqueue -bash: cd: /var/spool/mqueue: Permission denied

I can see the mail queue with mailq or sendmail -bp, but that also takes a long time to display anything! Minutes!

What is the best way to get rid of the queue?