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Network Zimbra 6 Backups Stop Running

I had a situation where I had to recover a failing Zimbra email server running Network version 6.x. The hardware was failing, so I recovered the system to a new virtual server. There were a lot of things to deal with in moving to a new system, but I had everything back and running in about 12 hours (there was almost a terabyte of messages to move to the new system).

Everything looked good, but when I went back to do a reality check on the system a week later, I found out that the automatic backups weren't running.

It took a little research, but I figured out how to get backups to run again...

Zimbra and Barracuda Cagefight SMTP Address Rejection Battle!

Ever have your Zimbra server and Barracuda anti-spam system fighting it out over bad recipients? This can really slow down the Barracuda's interface and mail processing.

The fix I used back in 2009 was to make some changes to the POSTCONF settings in zmmta.cf

Getting Zimbra to Work with Droid X

We just picked up a couple of Droid X phones and could not get them to sync with Zimbra 5.0.22. Every time we tried to set it up, we'd get "ERROR Could not connect to the server." no matter what we tried. We checked all the usual suspects such as DNS, internet connection, etc. Also, we tried about every combination of user ID, domain, password, etc.

We also spent a week working with Zimbra tech support trying to get the Mobile tab to show up on 5.0.22, to see if we could change some settings there, but after a week they finally figured out that we were on 5.0.22 and you have to be on 6.0.x to see the Mobile tab!

Well, I finally figured it out...

Update 2: Zimbra Web Client Doesn't Download Compressed Javascript

The FINAL, FINAL, FINAL solution. (No, we didn't switch to Exchange.)

I have several other articles on this site talking about Zimbra not working at a client's home network, but working fine at the office and other locations.

The problem was that the compressed javascript files would not download and the Advanced Web Client would not work. It stalled during download and hitting refresh multiple times MIGHT get it to almost work (the code for handling folders would almost never load). If we took the computer into the office, it worked fine. If we took it home, it worked fine. If we cleared the cache, we were back to having the problem.

Sometimes Firefox would work, but IE almost never would...

Zimbra Upgrade Complains About Hosts File

When upgrading Zimbra, one of the first things it does is check your hosts file for two entries. It needs a valid localhost entry (the mysql setup is sensitive about this) and it needs a valid host FQDN entry for the server itself.

It wants to see something like this:

192.168.12.5   mail.xxxxxxxxxxx.com mail
127.0.0.1      localhost.localdomain localhost

The upgrade script kept complaining that my hosts file was incorrect, but those two entries where there and they looked fine.

Here's the error (sic):

 ERROR: Installation can not proceeed.
  Please fix your /etc/hosts file

So...

Update: Zimbra Web Client Doesn't Download Compressed Javascript

This issue has an updated article.

Well, not to speak too soon, but I may have finally worked out the issue with Zimbra and my client trying to use the advanced client. As outlined before, we've had some ongoing problems with the javascript failing to load and the advanced interface being useless.

So...

Zimbra Web Client Doesn't Download Compressed Javascript

This issue has an updated article.

I have a client using Zimbra that was having problems with the web client failing to start. It would get the the Zimbra logo screen, but not finish downloading everything.

The problem didn't occur everywhere. For instance, on the systems on the same LAN as the server, it worked fine. On some remote systems it worked fine. On the computers at his house, however, it wouldn't load. Only the "lite" HTML client would work.

We flushed the cache on the clients, but it didn't help. We checked for viruses and that didn't help. We called the cable company (ISP) and that helped a little, but still no joy.

We changed the MTU on the router: no help.

We upgraded to the latest 5.x version and still no joy.

The strange thing was, if we brought the system into the office, it worked.

I know Zimbra does some pretty elaborate caching and uses compressed javascript files, so I was pretty sure it had something to do with that...

Zimbra Failing to Re-index a Mailbox

I was getting a fatal error affecting a Zimbra server running 5.0.2. A user with a large mailbox (10gb, 38000 messages) was having problems, so the first thing I wanted to do was re-index their mailbox. This can fix a multitude of sins, but it can also take awhile and it is a very bad thing to cancel.

Anyway, I tried to re-index the mailbox and it would process for awhile and get to about message 2724, then all of a sudden it would start failing to index certain messages, then really crap out. Then it would actually take the Zimbra server down and I would have to restart it each time!

It seemed to be message specific in that mailbox (failed at the same point each time), so I rooted around in the /opt/zimbra/log folder and checked out the logs. I found the message number that it was stopping on, then found it in the message store for the user and renamed it. (The message number in the log is the prefix for the msg file that is stored in the user's store in /opt/zimbra/store/0/##/
where ## is the user's internal number.)

That allowed the reindexing to get past that message, but then it died just a little later.

After a lot of research and turning the problem upside down, I finally figured some things out...

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