It is a feature. Putty has option to use "Telnet" protocol or "Raw" protocol.
On Tue, 25 Apr 2023 at 16:43, Wietse Venema via Postfix-users < postfix-users@postfix.org> wrote: > Ue netcat (nc) instead of putty. > > I suspsect that putty is sending telnet protocol options, even when > it connets to a server on a non-telnet port. That would be a putty > bug. > > Wietse > _______________________________________________ > Postfix-users mailing list -- postfix-users@postfix.org > To unsubscribe send an email to postfix-users-le...@postfix.org >
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