Maybe a peek at one of the messages using View | Message
Source would reveal the transmital info and show where there
was a discontinuity.
What is happening when received messages are duplicated.... with a
date of 12/31/1969?
Perhaps something wrong in the headers - per exemple no "Date:" entry.
As Mark Hansen mentions unix reports time differently. If
so, then a default "before time" could happen under a
misfunctioning linix/unix/zenix etc smtp or pop3 server.
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