Email How to setup email system to receive emails in wordpress and woocommerce

Unfortunately for anything beyond basic Postfix MTA setup for outgoing email, I prefer not to touch as troubleshooting and supporting email related delivery etc issues is something I do not want to do for free.

There are variety of reasons why email isn't delivered and alot can be beyond just the server itself. It's why I suggest 3rd party email providers @yourdomain.com email hosting as they specialise in providing support for the product they provide. See discussion at

• Email - Free @yourdomain.com Email Accounts & Alternatives and
• Email - Zoho Mail Free @yourdomain.com Email Provider Setup Information

I also recommend 3rd party DNS than locally hosted so that does make automation for such a bit harder for any locally hosted email out of the box.

With that said, it doesn't mean if you know what you're doing, you can implement locally hosted webmail yourself. Unfortunately, I wouldn't be providing any assistance. Fellow community members are however free to help each other out if they want

More Info

Postfix is configured for sending out emails for all domains out of box. So you're all taken care of for any site hosted on your server for Postfix outgoing emails sent from the main host name so emails sent from @mainhost.domain.com. Which is why Getting Started Guide step 1 for proper main hostname DNS configuration is important for properly email delivery via Postfix and also mentioned at Email - Steps to ensure your site/server email doesn't end up in spam inboxes | Centmin Mod Community

But I have no intention of doing any local email pop3/imap support on Centmin Mod for receiving emails as I don't want to bother with troubleshooting mail delivery issues as there's so many factors outside of my control as to why mail isn't delivered on the internet. I don't plan on providing any free support for such email related matters either. So best to use 3rd party email providers for @yourdomain.com emails for best uptime, reliability, security and anti-spam and email user management. See a list of recommendations at Email - Free @yourdomain.com Email Accounts & Alternatives

Tecmint actually has a 5 part article on setting up your @domain.com emails on CentOS 7 but part of their steps assume Apache web server instead of Nginx i.e. for phpmyadmin (centmin mod has it's own phpmyadmin.sh addon installer) and use of firewalld instead of Centmin Mod's CSF Firewall (which already setup proper whitelisted ports). But most of the email site setup is applicable. For properly postfix @domain handling you need to utilise MySQL, anti-virus/malware scanner and implement anti-spam management = all these can increase server resource usage dramatically. Virus scanning can blow out to an extra 4-8GB of memory and ALOT more cpu usage and local email disk storage will increase.

• Part 1: How to Create and Setup Postfix Mail Server Database (MariaDB) Securely
• Part 2: How to Configure Postfix and Dovecot with Virtual Domain Users in Linux
• Part 3: How to Add Antivirus and Spam Protection to Postfix Mail Server with ClamAV and SpamAssassin
• Part 4: How to Install and Configure RoundCube Webmail Client with Virtual Users in Postfix
• Part 5: How to Use Sagator, an Antivirus/Antispam Gateway to Protect Your Mail Server
• As you also setup locally hosted @domain.com you'd have to setup all DNS requirements for SPF, PTR, DKIM, DMARC yourself Email - Steps to ensure your site/server email doesn't end up in spam inboxes | Centmin Mod Community If you used 3rd party @domain.com, like Google App/G Suite, Zoho etc then they have GUI based control panel/instructions for setting up SPF, DKIM at their end.
• You'd then need to constantly monitor your own server's IP address for blacklisting i.e. Email Server Monitoring Service - MxToolbox and deal with each blacklist for removal of your server's IP if blacklisted. With 3rd party @domain, they would be the ones monitoring and dealing with blacklist removal

Also one thing overlooked is if email resides on same server, if you have high cpu loads or out of disk space issues that will most likely prevent local Postfix and email sending so any alerts you setup via cron will also fail and any alerts set to @yourdomain.com addresses hosted locally on server also won't work.

 

but if you are not referring to receiving emails @yourdomain.com on server but referring to email delivery from postfix MTA server so they don't end up in spam/junk folders, then read and follow https://community.centminmod.com/th...ver-email-doesnt-end-up-in-spam-inboxes.6999/