I know, it's the age-old ongoing question. I had a previous roundcube installation that was working. The server that it was on crashed, so I downloaded the latest version and installed it on our rebuilt server.
I am able to IMAP in and see everything.
I cannot, however, send anything out, it keeps telling me SMTP Error(): Authentication failed.
Now I don't think I'm a complete newbie, I've been running our mail server for 10 years. But I have tried EVERY combination of $config smtp_host and $config smtp_auth_type, and NONE of them work. I've spent two days on this now, have read a hundred pages on people with the same issue, and I can't seem to get this solved.
My mail client logs in and I can send/receive email, so I don't believe it's a mail server issue. I need help getting this going!