SMTP
VRFY
IDN
#
# Server-side
CAPA SMTPUTF8
252 Send some mail and I'll try my best
#
# Client-side
smtp
idn
!win32
LC_ALL=en_US.UTF-8
LC_CTYPE=en_US.UTF-8
perl -MI18N::Langinfo=langinfo,CODESET -e 'die "Needs a UTF-8 locale" if (lc(langinfo(CODESET())) ne "utf-8");'
SMTP external VRFY with SMTPUTF8 support
smtp://%HOSTIP:%SMTPPORT/967 --mail-rcpt Användaren@åäö.se
#
# Verify data after the test has been "shot"
EHLO 967
VRFY Användaren@xn--4cab6c.se SMTPUTF8
QUIT