A user called in this morning and said that there is ~ 1.5hr delay from when they send mail to their account (from outside) to when it's delivered to their client using send/receive. Upon checking, indeed I see received messages sitting in the mail queue and I also see the user's mail client logging in/out and sending messages. No messages have been delivered to the user in the past 65 minutes. So perhaps this has nothing to do with Postfix & it's a courier issue? Any advice would be greatly appreciated. **EDIT**: It appears it was a quota issue. User's web space was set to 0 MB, presumably someone thought this would give them unlimited space. Mail's flowing normally now. The only question I have is this: Why was mail delivered at all if there was no space? Why a delay? I would think mail would just sit and queue until space was available. Anyone?