apache2 forwarding emails

[manou <manou@simicro-internet.mg>]

Hello folks,
Since today, my apache2 2.0.54-4 sarge forwards mails-spams to hotmail
and msn users,
I stopped down apache2 temporarily now.

here' s a log from postfix report:

Transcript of session follows.

 Out: 220 dog.domain.tld [...and the banner...]
 In:  POST / HTTP/1.1
 Out: 502 Error: command not implemented
 In:  Host: x.x.x.x:25
 Out: 502 Error: command not implemented
 In:  Content-type: application/octet-stream
 Out: 502 Error: command not implemented
 In:  Content-length: 3277
 Out: 502 Error: command not implemented
 In:  Max-Forwards: 10
 Out: 502 Error: command not implemented
 In:  Via: 1.1 x.x.x.x:25
 Out: 502 Error: command not implemented
 In:
 Out: 500 Error: bad syntax
 In:  HELO
 Out: 501 Syntax: HELO hostname
 In:  MAIL From:<mipzjuotac@rcurry.fsnet.co.uk>
 Out: 250 Ok

...


Is this relted to the CAN-2005-2088 apache2 bug or  another bug or I
have mistake on my configuration?

Notes:
- the server runs with squid.
- x.x.x.x is the postfix server's IP


REgards,

Manou