Very, very high POP3 Traffic

[webguy80]

A client we just set up is using an enormous amount of POP3 traffic, 3 to 5 gig per day.

At first I thought this may be because of a spammer but there is nothing out of the ordinary in the number of e-mails in the e-mail queue. Also, this is POP3 (incoming) not SMTP (outgoing). Anyone know how this could be happening?

I've attached a screen dump of his traffic for this month. He's only been online for two weeks.

Any help/thoughts/suggestions appreciated!

 

[webguy80]

Can't post the screen dump so you'll have to take my word for it.

 

[webguy80]

can anyone offer suggestions? kinda desperate here!