Poor reputation?
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! 
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