This is a new one for me...

I have 3 accts in pOutlook from 2 different domains. All are IMAP and have the exact same settings. Accts A and B are from the same domain, C is from a different one. Today, when I deleted emails from acct A, they re-download every time I sync even though I continue to delete them every time. Accts B and C behave properly; that is, once deleted, they do not re-appear on the next sync. Any ideas????