Duplicate messages

[John Holt]

Title: Duplicate messages

I recently sent an email advice to approx 50 people advising of a new email address that I now use.
One (at this stage) recipient has complained of receiving 5 duplicates of my original email in the past 15 hours since I originally sent it.
I have checked all my Entourage settings and can’t see any errors.
Is it my problem or could it be my ISP’s problem


Ent. V 10.1.4
G4/400 running OS 10.2.8

Thank you
John Holt