Hello Vesta Community!
I have tried to search the forum for the issue I'm having but haven't been able to find anything to help.
Currently, I can't send e-mail from the Roundcube installation on the server. A box appears when I hit send on a message and says "SMTP Error (550): Failed to add recipient "firstname.lastname@example.org" (relay not permitted)."
In the exim reject log I see:
reject.log:2017-09-13 14:59:09 H=(server.host.name) [::1] F=<email@example.com> rejected RCPT <firstname.lastname@example.org>: relay not permitted
I don't often use Roundcube unless I'm testing something quickly. So I'm not sure when this started, I do recall a Roundcube update that yum installed a while ago.
If I setup the sending account in an e-mail client (like Thunderbird) with STARTTLS, I can send and receive, no problem.
I have a feeling something in exim might not be letting Roundcube send mail, but the settings I tried to alter made no difference.
Any suggestions would be appreciated, thanks!