I'm trying to work out why some of my messages (in mbox) get flagged as 'N' when they're not.
So, how does mutt decide that a message is 'N'? There isn't an explicit flag indicating this so it must be some combination of absence of Status: and X-Status: flags. Can anyone tell me what it is please. ... and presumably mutt only locks the mbox when it writes to it, so while one is actually looking at a message and/or composing a reply the mbox is unlocked and available for the MTA to add messages. Mutt will only lock the mbox when it writes a new message to it or modifies or deletes an existing one. I obviously have some misconfiguration or disagreement between my MTA and mutt (the MTA is actually a python filtering script, it does use the proper python library for delivering messages to mbox though). -- Chris Green
