Mail is one of the hardest services to manage. Actually, mail is pretty simple in and of itself: there’s protocols people use to access their mail (such as IMAP and POP), protocols used to communicate between mail servers and send mail (SMTP, SMTPS) and then there’s a database of mail and user information. In Mavericks Server, all of these are represented by a single ON button, so it really couldn’t be easier. But then there’s the ecoysystem and the evil spammers. As a systems administrator of a large number of mail servers, I firmly believe that there is a special kind of hell where only spam is served at every…
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Resolving Corrupt journal.db Files in Kerio
Sometimes it seems like sqlite just isn’t equipped for some tasks. Sometimes it seems like some developers aren’t. Sometimes it ends up being a mystery as to what is really going on behind the scenes. Like watching CNN on a television right next to Fox News at the gym. Both can’t be reality. But what is real, is that journabl.db files get corrupt in Kerio all the time. And the logs often say something about SQLITE_CORRUPT &/or “database disk image is malformed”. To correct, first stop the Kerio server, then nuke the .journal.db file. Assuming the mail store is /usr/local/kerio/mailserver/store/mail on a Mac (swap /usr/local with /opt if using Linux)…
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Can't Undo Deletes in Kerio
When you setup a Kerio server, by default there’s a feature called AutoExpunge. This feature keeps mail clients from showing a message with a strikethrough through it when a message is marked for deletion. Once items are processed the message is moved to deleted and the strikethrough message is removed from the folder it was deleted from. Many users can get confused by this, so Kerio built a feature called AutoExpunge. That AutoExpunge feature instead of striking through messages just tosses them. That causes you to be unable to undo a delete. To disable AutoExpunge, stop Kerio Mail Server and then look for AutoExpungeOnDelete option in /usr/local/Kerio/mailserver/mailserver.cfg (I like to back…
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Increasing The Maximum Connections In Kerio Connect
Kerio has a few maximums set by default. There are also a few items that are not in the Kerio Connection Administration page. When using IMAP (and some other services), you can increase the maximum number of allowed connections to allow users to be able to connect to your servers using the variety of devices they likely now have. We’ll look at doing this with IMAP (given that each account accessed by each user is likely using at minimum 2 connections) but you can do this with many other services as well. To increase the total number of available IMAP connections: Open the Kerio Connect Administration page. Click on the…
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iPhone and GroupWise
There is no built-in support for GroupWise on the iPhone. Apple supports a number of other services, but GroupWise has not been high on the priority list and honestly, I don’t know that it would be high on mine either… Having said that, it did pop up on my radar and I was able to find a couple of ways to achieve a good sync. The first is Entourage. You can use Entourage as a conduit to then grab information and sync it with GroupWise. This has a hopefully obvious disadvantage, which is that it does not synchronize wirelessly – you have to cradle sync to get the data onto…
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Kerio Mail Server in 10 Minutes
The good people at Kerio have been kind enough to distribute their mail server software bundled into a CentOS installation on a Virtual Machine. You can just snap it into Fusion very easily, if you want to take the Kerio Mail Server (KMS) for a ride. I can’t say I would recommend running it full time in Fusion on Mac hardware though, you might be better served installing the package installer that Kerio distributes in that case.. There is a second nice thing about the VM in that it does most of the work in setting up Kerio for you. When you download and run the VM, it immediately fires…
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Kerio
Ever wonder if there’s something else out there other than Exchange? Well, if you are a company with less than 400 accounts and you don’t need some of the more advanced features of Exchange, like site replication then Kerio might just be the app for you: http://www.kerio.com
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Kerio: Out of Office Message
To setup an Out of Office message with Kerio Mail Server, log into the web portal to access your mail. Then click on Settings and select Out of Office. Move the bulleted option to I am out of office now and then type in the our of office message you’d like to use. When finished, click on the OK button.
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Kerio: Permissions
Sometimes when you’re setting up permissions for certain folders using Microsoft Entourage, the process will fail. If it does you can still set permissions using the web portal. To do so, log into your webmail. Then control-click the folder in question and click on the Access Rights… button. Here, you will be able to define who can read, write or delete items. Make sure that if you’re giving someone access to a folder that you don’t forget to give access to the parent folder (eg – the parent folder to INBOX is the root of your email hierarchy). This is one of the more common mistakes we see there.
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Kerio: Spam Options
Kerio has a variety of features available for mitigating the evil spam gremlins. These include: 1 – SpamAssassin – Open Source spam filter 2 – Directory Harvest Attack Protection – track email coming in for non-existent users and limit the number allowed per host 3 – Policies – tag emails with X-Spam headers, then use local policies, etc. Also write custom filters that identify certain keywords as spam 4 – RBL – A standard with mail servers, Realtime BlackList servers mark common spammers or hosts that do not meet a minimum criteria for being acceptable mail servers 5 – SPF – Rely on srv reccords from domains to specify what IPs…