Some mail providers (ISP) recently changed their requirements regarding to how incoming mail is handled and who is allowed to send mail through their servers via the SMTP protocol. This mainly was necessary to reduce the amount of spam, thus letting only authorized users send mails. This protocol is called SMTP-AUTH and fully supported by YAM 2.5+.

Often providers even require the users to connect to their SMTP servers via an encrypted connection only. This is what the SSL/TLS feature in YAM is for. Together with the required AmiSSL library, it fully encrypts every transfer through YAM and the mail server. To use such a secure connection you must install AmiSSL V3.5. While AmigaOS4.0 already comes with AmiSSL V3.5 installed, for OS3.x or MorphOS you have to download AmiSSL 3.6 from the AmiSSL homepage and install it on your system.

To properly configure a SMTP-AUTH connection in YAM, you can go to the TCP/IP page of the configuration window. There you have to make sure that you have configured the SMTP accordingly:

• secure connection type: SSLv3 (if it is required)
• use SMTP-AUTH: yes
• User name: your user name
• Password: your password
• Method: Auto

Usually Auto as the authentication method should be suffice. If your mail provider still doesn't accept your mails then you should select a specific authentication method (DIGEST-MD5, CRAM-MD5, LOGIN or PLAIN).

And if you are still unable to send mails even via one predefined method, then you can run YAM with the DEBUG command-line option. This option will enable the internal TCP/IP debugging and output any raw output of the connection on the shell you just started YAM from. See FAQ item #1053 for more information on how to debug YAM.