SMTP IDN # # Server-side # # Client-side smtp IDN !win32 codeset-utf8 LC_ALL=en_US.UTF-8 LC_CTYPE=en_US.UTF-8 SMTP without SMTPUTF8 support (IDN Enabled) - UTF-8 based recipient (host part only) From: different To: another body smtp://%HOSTIP:%SMTPPORT/%TESTNUMBER --mail-rcpt recipient@åäö.se --mail-from sender@example.com -T - # # Verify data after the test has been "shot" EHLO %TESTNUMBER MAIL FROM: RCPT TO: DATA QUIT From: different To: another body .