I love the mail client autoconfiguration options, however it's currently set to use plaintext authentication on port 25 for SMTP.
I have "Enable TLS encryption?" set to Always and Port 25 firewalled off for to help with PCI DSS compliance, so it would be great if I could edit the autoconfiguration template, or if it could pickup some more sensible detaults based on the server configuration.
I see you have "Added a template section to configure the mail client auto-configuration XML, for example if some domains use custom mail servers." on the release notes for 3.99 - this sound like exactly what I'm looking for but I can't find it anywhere (I'm running 3.99.gpl on CentOS 6.4 and using Postfix).
Also, when I enabled the Mail Client Autoconfiguration I get the following output (although I think it worked the fist time I ran it):
Enabling mail client autoconfiguration for 5 virtual servers .. Failed for domain1.com :
Failed for domain2.com :
Failed for domain3.com :
Failed for domain4.com :
Failed for domain5.com :
However, it does seems to work, correctly creating the cgi-bin/autoconfig.cgi files and mapping them to /mail/config-v1.1.xml for each domain