Outlook 365 sending intermittently

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phs3

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Since we migrated to Outlook 365 (or 364.5, as we call it; I actually heard a Microsoftie talk at length about "Office 360", which made me laugh!), Outlook often decides it's not going to send mail. Not all the time, but sometimes. Incoming always works, even when it's not sending, and if I do <cntrl>M or F9, anything pending goes just fine. There's only one Send/Receive group defined, and all my accounts (22 -- 2 Exchange, 20 POP) are in it. That group is set to schedule a send/receive every 3 minutes.

It's clearly not a connectivity issue, as incoming works. Nor do I get any errors; stuff just doesn't go. I've come downstairs in the morning a couple of times and found things pending from the night before!

While I've gotten used to doing <cntrl>M frequently, I obviously shouldn't have to, and it's irritating. Any ideas?
 
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