Unknown user:
user@soner.com.uk
RCPT TO generated following response:
550-Verification failed for <
hen@line.com>
550-It appears that the DNS operator for chinaoffice.biz
550-has installed an invalid MX record with an IP address
550-instead of a domain name on the right hand side.
550 Sender verify failed
:funk: :funk: :funk:
