...>nslookup -type=MX globetworld.com 8.8.8.8
Server: google-public-dns-a.google.com
Address: 8.8.8.8
Non-authoritative answer:
globetworld.com MX preference = 0, mail exchanger = smtp.secureserver.net
globetworld.com MX preference = 10, mail exchanger = mailstore1.secureserver.net
...>
...>telnet smtp.secureserver.net 25
220 p3plibsmtp01-04.prod.phx3.secureserver.net bizsmtp ESMTP server ready
500 5.5.1 command unrecognized
HELO MitkoS
250 p3plibsmtp01-04.prod.phx3.secureserver.net hello [*.*.*.*], pleased to
meet you
MAIL FROM:
Mitko@Mitko.mitko
550 5.1.0 <mitko@mitko.mitko> Sender rejected. IB506
MAIL FROM:
Mitko@mitko.com
250 2.1.0 <mitko@mitko.com> sender ok
RCPT TO:
support@globetworld.com
550 5.1.1 <support@globetworld.com> recipient rejected
RCPT TO:
info@globetworld.com
550 5.1.1 <info@globetworld.com> recipient rejected
RCPT TO:
office@globetworld.com
550 5.1.1 <office@globetworld.com> recipient rejected
r
500 5.5.1 command unrecognized
RCPT TO:
postmaster@globetworld.com
450 4.7.0 too long without DATA command (closing session)
Connection to host lost.
...>