Got everything configured correctly and everything seems fine now, still cant get emails going out or receiving.
Below is the error I get on the Panel (Nothing on the roundcube).
"Some cloud vendors (such as Google, Amazon) close port 25 by default, and you need to contact the vendor to open port 25 before you can use the post office service normally"
I am running it on AWS EC2 and port 25 is open to all.
After repair, below is what I seen in log (still the same above error). The IP I see is not the server IP. Not sure where where this IP is coming.
Any direction is really appriciated.
Dec 1 18:50:26 dochouse postfix/smtpd[1269698]: connect from 50-116-60-194.ip.linodeusercontent.com[50.116.60.194]
Dec 1 18:50:26 dochouse postfix/smtpd[1269698]: warning: SASL: Connect to private/auth failed: No such file or directory
Dec 1 18:50:26 dochouse postfix/smtpd[1269698]: fatal: no SASL authentication mechanisms
Dec 1 18:50:27 dochouse postfix/master[1269597]: warning: process /usr/lib/postfix/sbin/smtpd pid 1269698 exit status 1
Dec 1 18:50:27 dochouse postfix/master[1269597]: warning: /usr/lib/postfix/sbin/smtpd: bad command startup -- throttling
Dec 1 18:52:07 dochouse postfix/anvil[1269701]: statistics: max connection rate 1/60s for (smtp:50.116.60.194) at Dec 1 18:50:26
Dec 1 18:52:07 dochouse postfix/anvil[1269701]: statistics: max connection count 1 for (smtp:50.116.60.194) at Dec 1 18:50:26
Dec 1 18:52:07 dochouse postfix/anvil[1269701]: statistics: max cache size 1 at Dec 1 18:50:26