Why can't I post messages to my mailing list?

There are many reasons why you might not be able to post to a mailing list. The symptom is typically that your message to the list just disappears. You never see a copy in your inbox and you never see a copy in the archives.

The Launchpad help wiki at https://help.launchpad.net/Teams/MailingLists#troubleshooting has some useful things you can try before submitting a bug report or question.