What the hell? Gmail is on spamcop's blacklist?

[KingNothing]

Just tried to send a message to one of my professors and got the mail returned to me with this:

This is an automatically generated Delivery Status Notification

Delivery to the following recipient failed permanently:

[removed]

Technical details of failure:
PERM_FAILURE: SMTP Error (state 9): 554 Your e-mail message sent to mail.unomaha.edu has been rejected. The e-mail system at your location with IP number 64.233.184.205 was found in the DNS blacklist at bl.spamcop.net database as being an open relay or source for spam.

64.233.184.205 is wproxy.gmail.com.

 

[Shawn]

sucks

 

[Anubis]

[Nelson] HA HA [/ Nelson]

 

[her209]

GpMwAnIeLd

 

[ISAslot]

You get what you pay for.

 

[KingNothing]

Never had this problem with my other free e-mail services.

 

[ViRGE]

Someone must be using Gmail to send spam then.

FYI, it will be delisted in approximately 12 hours