How long will messages be held in mail queue

[shacker23]

A customer exceeded mail quota for a couple of days. I had thought that all mail received until space went back under quota would be held in the queue ("Discard emails for users who have exceeded their quota instead of keeping them in the queue." is not checked in Exim Config Editor). But after two days of being over quota, it seems that the queue did not store his email. How long are messages kept in the queue before being discarded? Is there a max number of emails that can be queued per user? Thanks.

[lloyd_tennison]

See my other post. Naughty -cross-posting like this