Zimbra

Adding Domains

Create domain in https://zmail1.example.io:7071

Add dkim

sudo -u zimbra /opt/zimbra/libexec/zmdkimkeyutil -a -d uvoo.io

sudo su - zimbra
/opt/zimbra/libexec/zmdkimkeyutil -a -d example.org

Add dns txt records for dkim, dmarc, and spf, see existing domain for exmaple.

Setup Notes

Install SSL Certificate

• https://wiki.zimbra.com/wiki/Administration_Console_and_CLI_Certificate_Tools
• https://www.thesslstore.com/knowledgebase/ssl-install/install-ssl-certificate-zimbra-mail-server/

Email Protection & Delivery Best Practices

https://wiki.zimbra.com/wiki/Best_Practices_on_Email_Protection:_SPF,_DKIM_and_DMARC

Other

• https://wiki.zimbra.com/wiki/Steps_to_fix_port_redirection_problem_with_password_change_request_on_webclient
• https://wiki.zimbra.com/wiki/Zimbra_Proxy_Manual:Installing_,_Configuring,_Disabling_the_Zimbra_Proxy
• https://wiki.zimbra.com/wiki/Preauth
• https://wiki.zimbra.com/wiki/LDAP_Authentication
• https://wiki.zimbra.com/wiki/ShanxT-LDAP-CheatSheet

ImapSync

• https://github.com/imapsync/imapsync/blob/master/INSTALL.d/INSTALL.Ubuntu.txt
• Allow IMAP
• https://mail.google.com/mail/u/0/#settings/fwdandpop
• Disable Two Factor Auth & and allow less secure apps temporarily
• https://myaccount.google.com/lesssecureapps
• You may want to change settings like conversation mode
• https://github.com/imapsync/imapsync/blob/master/FAQ.d/FAQ.Gmail.txt

sync example

imapsync  \
           --user1 jeremy@example.net \
           --password1 <YOURPASS> \
           --host1 imap.gmail.com \
           --gmail1 \
           --ssl1 \
           --user2 busk@example.io \
           --password2 <YOURPASS> \
           --host2 zmail1.example.io \
           --ssl2

Increase MTA size for bigger attachments

postconf | grep message_size_limit
message_size_limit = 10240000
zmprov modifyConfig zimbraMtaMaxMessageSize 51200000         
zmprov modifyConfig zimbraFileUploadMaxSize 51200000
zmprov modifyConfig zimbraMailContentMaxSize 102400000