Qmail patch for sending auth tls mail to MTA more recent.
I use qmail for sending and receiving mail for my own family. These periods lot of ( Italian ? ) ISP block tcp port 25 in exit, trying to stop, or at least minimize spam from various windows virus so I found a very good solution to create a free account on smtp2go that offer a free 1000 mails/month without adding anything to your original mail, and don't use port 25 for sending out mails. You only need to use auth to "login" to smtp for sending the mail. Recently they changed something in their servers that broke up my setup. Basically, qmail, when sending out mails to a server that offer TLS by changing the preferred method from : 250-AUTH CRAM-MD5 LOGIN PLAIN to 250-AUTH SCRAM-SHA-1 SCRAM-SHA-256 CRAM-MD5 PLAIN LOGIN breaking the sending of the mail. In the qmail-remote.c infact there is the smtp_auth function wich read the AUTH line, and search for the very first word after AUTH. If it is "C" ( for CRAM ), "P" for PLAIN or "L" for L...