Clear all

Postfix SMTP Error (535): Authentication failed  


Joined: 6 years ago
Posts: 210
20/06/2019 10:57 am  

I was working setting up a new Managed VPS for a client today. The client wanted to host their emails on the server so I was setting up Postfix mailserver. The server was Ubuntu 16.04 with Virtualmin and Nginx.

I installed Roundcube for webmail. But when I try to send a test mail I got Postfix SMTP Error (535): Authentication failed.

After researching for a bit, I've found out that I was missing the missing the symlink from /var/run/saslauthd to /var/spool/postfix/var/run/saslauthd. So I created it with following command.

ln -s /var/run/saslauthd /var/spool/postfix/var/run/saslauthd

That fixed the Postfix SMTP Error (535): Authentication failed. Remember to restart Postfix.

This topic was modified 6 months ago by Tharindu

Become a affiliate and earn up to 10% commissions from your referrals

Back to top button

We use cookies to give you the best online experience. By agreeing you accept the use of cookies in accordance with our cookie policy.