$ telnet smtp.nifty.com 25 Trying 202.248.37.200... Connected to smtp.nifty.com. Escape character is '^]'. 220 mail505.nifty.com ESMTP Nifty Mail Server MAIL FROM:<myname@家鯖> 250 2.1.0 <myname@家鯖>... Sender ok RCPT TO:<myname@users.sourceforge.net> 250 2.1.5 <myname@users.sourceforge.net>... Recipient ok DATA 354 Enter mail, end with "." on a line by itself From: myname@localhost