Email address not unique?!
When trying to submit a paper yesterday, I got the following message
The email address [xian@mylab.myuni.mycountry] is NOT unique.
Try entering your login name or first/last names or contact
the editorial staff for further assistance
which is rather puzzling since an email address is obviously unique…!
Xi'an's Og 
October 17, 2013 at 3:10 am
E-mail addresses ARE NOT unique guys. At least 3 other persons are using mine for years now (in different parts of the World,!, not maliciously, thank God…), as I recently discovered. I also discovered that legitimate (non spam) e-mail messages don’t always go to the address that were prescribed to go (! ?????). Surprised? please believe it and let others know about it.
October 13, 2010 at 9:19 am
Probably a non-precise way to say that two different accounts on arxiv are associated with your address, hence that it does not work as a unique identifier or your account. Maybe a consequence of HAL automatically updating arxiv ? Or a mess-up in the database ?
October 13, 2010 at 3:25 pm
Precision: this is NOT an arXiv reply but one from the electronic portal of the journal I submitted the paper to…!