Here are the very useful exim commands used at SSH environment.

1. exim -bpc = counts all email in the mail queue
2. exim -bp = mailq — The mailq is relevant as it gives your the email IDs.
3. exim -M emailID = force delivery of one message
4. exim -qf = Force another queue run
5. exim -qff = Force another queue run and attempt to flush frozen messages
6. exim -Mvl messageID = View Log for message
7. exim -Mvb messageID = View Body for message
8. exim -Mvh messageID = View Header for message
9. exim -Mrm messageID = ReMove message (no errors sent)
10. exim -Mg messageID = Give up and fail message, message bounces to sender