We are not able to receive emails from one company...
i am receiving this error.
The e-mail system was unable to deliver the message, but did not report a specific reason. Check the address and try again. If it still fails, contact your system administrator.
< server.removed #5.0.0 X-Postfix; host server[xxx..xxx.42.242] said: 553 5.1.8 <email removed>... None of your MX-Records resolve (in reply to MAIL FROM command)>
please kindly help me....
it is very urgent.