Ken Perl writes:
colinux is mapped to 127.0.0.1 in my /etc/hosts, the test can work well with this illegal name.
Courier does not use the hosts file. Furthermore, sender and receipient addresses are required to be fully-qualified domain name.
However, it is very strange, if I try below scenario, the mail can not be sent with a syntax error, $ telnet localhost 25 Trying 127.0.0.1... Connected to colinux. Escape character is '^]'. 220 colinux ESMTP helo colinux 250 colinux Ok. mail from:<k...@colinux> 517 Syntax error. the log is, courieresmtpd: error,relay=::ffff:127.0.0.1,from=<p...@colinux>: 517 Syntax error.
There's nothing strange about it. "colinux" is not a fully-qualified domain name. What you have or don't have in your hosts file does not make any difference.
pgpMrDxroeO9m.pgp
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