Messages over hi water mark

[Jim C]

I am recveiving message telling me my mailbox is oner the HI water mark..
Please delete some messages from my mailbox.
Is this an authentic message?
Thanks

 

[Brian Tillman]

I am recveiving message telling me my mailbox is oner the HI water
mark.. Please delete some messages from my mailbox.
Is this an authentic message?

Usually. What type of account do you have?

 

[Ken Blake, MVP]

I am recveiving message telling me my mailbox is oner the HI water
mark.. Please delete some messages from my mailbox.
Is this an authentic message?

Probably, but the message presumably comes from your ISP, not from Windows.
Check with your ISP to find out.