Attention: asco-o@o-o.lt

A problem was found in an Email message sent to you.
This Email scanner intercepted it and stopped the entire message
before it reached you. No further action is required on your part.

The problem was reported to be:

Disallowed  characters found in MIME headers

Please contact your I.T support personnel with any queries regarding this
policy.

The message sent to you had the following envelope:

MAIL FROM: aclbppbkqi@earthling.net
RCPT TO:   asco-o@o-o.lt

... and with the following headers: