My ultimate goal: Send 7bit mail to certain users I have tried the brute force smtp_never_send_ehlo=yes in the mail.cf and I have tried the more elegant solution using master.cf sevenbit unix - - n - - smtp -o smtp_never_send_ehlo=yes
and transport file Both solutions work as expected if I test them with a mail command ie: echo test ΓΌ | mail [EMAIL PROTECTED] I get quoted-printable for the designed addresses and 8 bit for the others. However if I telnet to port 25 it does't work. There is no conversion, and no mime headers are present or added by Postfix. I assume postfix relies on proper content-* lines, but through telnet these here lines are not added and postfix just passes the mail over. How do I tell Postfix to do 8bit->7bit conversion then? I have tried some dirty tricks too: like trying (as a first step) to add content-type header lines to all outgoing emails with smtpd_sender_restrictions = regexp:/etc/postfix/access in my main.cf and /.*/ PREPEND mime-header-example: just an example 8bit to my access file (for a later postfix 8 to 7 conversion) but nothing is added at all to the headers. I am stuck there. Any help greatly appreciated. Thanks, RC.