Modify mail server config and now having problem

[kajlaajay]

Hello Brothers/Sisters

Please help me out with this problem. I am new to linux and its commands i can only use a little vi editor. Sorry if this type of thread posted earlier but i need solution please.

Here is my problem - "SMTP Error (250): Authentication failed." in roundcube


i did some changes in my mail server like postfix and dovecot from some website steps to secure my emails but got only problems no solution. I modify many files in my centos 7 server to secure but nothing happen.


Few errors after using different website steps to use postfix and dovecot:-
1. SMTP Error (250): Authentication failed.
2. connection failed
3. nothing happen only processing in roundcube


Now i am not getting any mails and not able to send too.


To solve my problem i delete every line which i write for postfix and dovecot (i think i deleted but maybe few left which i dont remember or dont understand)


Please help because this is my production vps and i dont want to loose this server at all.


Other then mail server everything is working fine

[24x7servermanag]

What are the /var/log/maillogs and SMTP mail logs ? Have you checked them?