Very many thanks Diane for your detailed reply. It has only happened a very few times, and in recent times from one source only. I'll try adjusting the settings to leave the message on the server so I can experiment rather the keep asking for a resend!
I've no experience of using Outlook Safe...
I am very occasionally having this problem, with Outlook 2003. I'm also using ESET Smart Security, and since there has been some suggestion that AV software can cause this problem I have disabled POP3 protocol checking, but it still happens.
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