Zimbra Mail Server CentOS firewall settings
On CentOS 7 server with firewalld running, used following command to open ports used by Zimbra Mail Server. See Zimbra,
Zimbra redirect webmail http to https
After Zimbra mail server installed, webmail work on url https://SERVER-HOSTNAME-HERE/ If you access webmail with out HTTPS, it won’t work.
Install SSL Certificate on Zimbra mail server
To install SSL certificate for Zimbra Mail Server, login to server, switch to user zimbra Now create file commercial.key, paste
Email Marketing
https://sendpulse.com – Free upto 500 subscribers. https://convertkit.com – Free upto 1000 subscribers. https://mailchimp.com – Free upto 2000 subscribers. https://www.gmass.co –
DMARC
DMARC is used to protect your email from email spoofing. DMARC use SPF and DKIM record to validate your email.
Postfix disable IPv6
To disable IPv6 on the postfix mail server, edit Find Replace with Restart postfix Method 2 To see the current
Configure postfix to relay mails using Gmail
Install postfix Create file Add Save and exit editor. Run Edit postfix configuration file Find and remove At end of
Zimbra Unable to validate certificate chain
On installing SSL on Zimbra mail server, i get following error This was due to SSL cert chain. The ca-bundle
Postfix Delete Mails from a user
To delete emails from a particular user from postfix mail queue, run See postfix
imap
Migrate IMAP emails using imapsync Migrate Emails using imapcopy PHP script to test IMAP
Migrate Emails using imapcopy
imapcopy is a program to copy mails from one IMAP mailbox to another. I was using this for email migrations.
PowerMTA
PowerMTA is a highly configurable mail server for email marketing. Unlike general email servers, PowerMTA can be configured to meet