I installed LAMP and ISP config on a Debian 8 VPS which comes with a whole bunch of packages, like Dovecot, SASL, Fail2Ban, Spam Assassin, Pure FTPD, Quota, and various PHP and SQL components,and I had to build and install ISP config and possibly something else. I learned that Postfix and Sendmail do not work well together. They cancel each other out.

When I set up a domain on ISP config, I set it to server, so server.sensation experience. pop3://server.sensation-experience. Imap://server.sensation-experience.com/ I set up three mailboxes, a webmaster, a test, and a send-only donotreply@sensation-experience.com/ I did this using ISP Config.

It’s similar to C-Panel, but it’s free. How do I get WordPress to communicate with the mailbox donotreply? I want people to create accounts and get e-mails from a send-only address, but I also want them to write to webmaster, which again, I already set up a mailbox for that.

Also, do you have any guides on how to certify SSL/TLS with ISP Config? Right now I am being told that the security of the certificate couldn’t be trusted. Can I use Cloudflare as another way to force https? I am already using their nameservers.

By the way, I have set up a virtual host that is different from the default, so everything is in /var/www/html/sensation-experience.com/public_html. The public_html is the document root. Inside that root folder I have /blog.

@Dan,

You need to add all domains to Postfix main configuration file, one per line as explained here: https://blog.tinned-software.net/setup-postfix-for-multiple-domains/

Thanks! Can you give me an example? let’s say I have 4 domains, onedomain.com, twodomain.com, threedomain.com and fourdomain.com.

Which part of /etc/postfix/main.cf would these domains go into and what’s the correct syntax?

@Dan,

Yes, you need to define each domain in Postfix configuration.