Problems Recieving email from some server

[glenz42]

(Wingate 6.0.4) Im having a issue recieving email from some servers ive enable debuging and im see this in the log file

07/07/05 17:28:06 203.59.24.15 Guest 0000034163 Debug: <=S: 250 Requested mail action okay, completed
07/07/05 17:28:06 203.59.24.15 Guest 0000034163 Debug: C=>: DATA
07/07/05 17:28:06 203.59.24.15 Guest 0000034163 Debug: <=S: 354 Start mail input; end with <CRLF>.<CRLF>
07/07/05 17:29:31 203.59.24.15 Guest 0000034163 Error: Client closed connection unexpectedly expecting Message body - terminating
07/07/05 17:29:31 203.59.24.15 Guest 0000034163 Traffic 227 1113 0 0 85s
07/07/05 17:29:31 203.59.24.15 Guest 0000034163 Terminated exit code 0

Any idea what might be going wrong or maybe a workaround for this issue. Delivery from other mail server is okay.

Thanks
Glen