Remove mail from queue manually

[Gregor Szaktilla]

Hi folks,

since I moved to a new job just 3 days ago I don't yet have all the
books and docs I had at my former job (ordered but not delivered yet).
So please let me ask a question: how can I remove messages in the queue
manually (by number or [local] sender)? I thought there was a
single-line-command but I can't remember ...

Thanks a lot :-)

Gregor