SMTP VRFY IDN # # Server-side CAPA SMTPUTF8 252 Send some mail and I'll try my best # # Client-side smtp IDN !win32 codeset-utf8 LC_ALL=C.UTF-8 SMTP external VRFY with SMTPUTF8 support smtp://%HOSTIP:%SMTPPORT/%TESTNUMBER --mail-rcpt Anv%hex[%c3%a4]hex%ndaren@%hex[%c3%a5%c3%a4%c3%b6]hex%.se # # Verify data after the test has been "shot" EHLO %TESTNUMBER VRFY Anv%hex[%c3%a4]hex%ndaren@xn--4cab6c.se SMTPUTF8 QUIT