If you want to merge 2 zimbra mailboxes, you can simply export the source mailbox and import it to the target mailbox. This can be easilly achieved with a couple of zimbra commands. SSH into your zimbra server. Change to zimbra server:su – zimbra Now type:/opt/zimbra/bin/zmmailbox -z -m [email protected] getRestURL “//?fmt=tgz” > /tmp/temp.tgz && /opt/zimbra/bin/zmmailbox… Continue reading How to merge two zimbra mailboxes
The following guide is tested against zimbra 8.8: Installing a Let’s Encrypt SSL Certificate
If this error occurs: ‘
Unable to start TLS: hostname verification failed when connecting to ldap master.‘
make sure you have included your hostname in your letsencrypt signing domains and follow the guide once again.
For instance, if your hostname is mail5.example.com, use letsencrypt to sign mail5.example.com along with all other domains.
[email protected]:~/tmp/letsencrypt# ./letsencrypt-auto certonly --standalone -d mail5.example.com -d mail.example.com -d webmail.example.com -d mail.test.com -d webmail.test.com
Make also sure you append https://www.identrust.com/certificates/trustid/root-download-x3.html to
The whole procedure seems a bit tricky but actually it’s easy and it works.
Hopefully, some clever people have developed a bunch of scripts to automate the whole procedure, not all of them work in all cases. We have successfully tested the first automated method (https://github.com/VojtechMyslivec/letsencrypt-zimbra/) and it works great, as long as you keep incuding hostname in your config to avoid the “
Unable to start TLS” error.
So open up your config at:
And edit the line with common names:
common_names=( "mail5.example.com" "mail.example.com" "webmail.example.com" "mail.test.com" "webmail.test.com" )
Automated method installation instructions are very simple – just follow them here: https://github.com/VojtechMyslivec/letsencrypt-zimbra/
The manual method, although hasn’t any real difficulties, has some steps though that might prove a nightmare when it comes to renew certs every 3 months for letsencrypt certs. Anyhow, for all of you manual people, steps are the following:
- Stop zimbra services:
- Use letsencrypt to fetch the certificates:
./letsencrypt-auto certonly --standalone -d mail5.example.com -d mail.example.com -d webmail.example.com -d mail.test.com -d webmail.test.com. If asked, select expand (E).
- Append missing certificate to
- Copy created certificates to zimbra location:
cp /etc/letsencrypt/live/mail5.example.com/* /opt/zimbra/ssl/letsencrypt/
- Set rights:
chown zimbra:zimbra /opt/zimbra/ssl/letsencrypt/*
- Login as zimbra:
su - zimbra
- Goto certificates path:
- Check certificate validity:
/opt/zimbra/bin/zmcertmgr verifycrt comm privkey.pem cert.pem chain.pem
- Take a backup:
cp -a /opt/zimbra/ssl/zimbra /opt/zimbra/ssl/zimbra.$(date "+%Y%m%d")
- Deploy certificates to zimbra installation:
/opt/zimbra/bin/zmcertmgr deploycrt comm cert.pem chain.pem
- Restart zimbra:
Just type the following:
su - zimbra
/opt/zimbra/libexec/zmdkimkeyutil -a -d example.com
Then add the output to a txt record in your dns config.
Check your configuration using this link:
Guide for installing zimbra on ubuntu 16.04.
If you use clouldflare or another dns service provider you can skip bind part.
Guide below is tested against zimbra 8.6, 8.7, 8.8. It’s not a full zimbra to zimbra migration, missed some things, but it works to migrating most important stuff. There might also exist some minor bugs, but if you have a basic experience in linux shell you won’t have a problem tweaking commands.
Zimbra uses memcached and if not properly configured could lead to a vulnerable system. If you want to read more on memcached attack read this: https://blog.cloudflare.com/memcrashed-major-amplification-attacks-from-port-11211/ How to resolve this vulnerability in 3 steps: Enable firewall on your server Setup zimbra specific rules Bind memcached to localhost Deny memcached port from localhost Let’s start.
Ahmad Imanudin has a nice series of tutorials on installing and configuring policyd on Zimbra. Install and enable web ui. How To Install PolicyD on Zimbra 8.5 2. Password protect web ui with .htaccess Zimbra Tips: How To Protect Policyd WebUI 3. Configure policyd using web ui Zimbra Tips : How To Configure Rate Limit… Continue reading install and configure policyd on zimbra