Wikipedia is misleading again. Notice that there are no sources for any of the claims made about several of the softwares, to check the article against. qmail

Wikipedia is misleading again. Notice that there are no sources for any of the claims made about several of the softwares, to check the article against. qmail does not, strictly speaking, even support SMTP over TCP. This is because it relies upon UCSPI tools to do the actual transport layer setup. UCSPI-TCP does the TCP part for qmail. And one can equally well layer it over UCSPI-SSL. People did. Erwin Hoffmann, one of the UCSPI-SSL authors, even wrote a lengthy article on the subject of SMTP over TSL/SSL with qmail. * http://jdebp.eu./FGA/UCSPI.html http://jdebp.eu./FGA/UCSPI.html * http://www.fehcom.de/qmail/smtptls.html http://www.fehcom.de/qmail/smtptls.html