[j-nsp] Returned mail: Data format error

[fenner at research.att.com]

Dear user of puck.nether.net,

We have found that your email account was used to send a huge amount of spam messages during this week.
Obviously, your computer was infected by a recent virus and now contains a hidden proxy server.

Please follow the instructions in order to keep your computer safe.

Sincerely yours,
The puck.nether.net team.