Mail System Error - Returned Mail

[Automatic Email Delivery Software]

The original message was received at Sat, 6 Jan 2007 17:39:12 -0800 from [135.191.74.21]

----- The following addresses had permanent fatal errors -----
sendmail na linux.cz

----- Transcript of session follows -----
... while talking to host 126.40.230.182:
554 5.0.0 Service unavailable; [7.182.84.92] blocked using bl.spamcop.net, reason: Blocked
Session aborted, reason: lost connection