Jan-Piet Mens

telnet is insecure and should be replaced by SSH, but since when does it have a poor reputation?

$ telnet antispam.sxxxxxs.com smtp
Trying 59.160.aaa.bbb...
Connected to antispam.sxxxxxs.com (59.160.aaa.bbb).
Escape character is '^]'.
554-antispam.kxxxxxs.com
554 Your access to this mail system has been rejected due to the sending MTA's poor \
reputation. If you believe that this failure is in error, please contact the intended \
recipient via alternate means.
Connection closed by foreign host.

Poor reputation indeed!