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Thread: Does the use of z-push request an ActiveSync license by Microsoft?

  1. #11
    Zarafa

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    About how many users are you talking? I can hardly imagine that microsoft will knock on your door and require you to pay money for the use of a freely available piece of open source software.
    Last edited by fbartels; 10-08-2016 at 04:15 PM.
    Regards Felix

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  2. #12
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    I can hardly imagine that microsoft will knock on your door and require you to pay money for the use of a freely available piece of open source software.
    That's exactly what Microsoft does!! Android is free and open source, right? They may not knock on your door, when you sell your first phone, but as soon as you catch their attention, they will knock at your door. Well I don't think to be on their radar in the near future, but I also don't want to built on a groupware solution, that may get me in trouble in the future.

  3. #13
    Zarafa

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    Oh, we are well on the radar of Microsoft. We participate in the Microsoft Plugfests, and Interoperability summits and have also already submitted a few bugs for the Outlook ActiveSync implementation.

    But yet again: Microsoft will not knock on your door as the user of Android, but maybe or eventually on the door of the manufacturer and seller of the Android devices. You as the user do not need to fear anything. (why should it worry you as the owner of a samsung or apple devices, if one sues the other a over potential patent breach?)
    Regards Felix

    How to get Kopano

    Zarafa ALPHA/BETA/RC feedback in BETA forum please.
    Zarafa IRC chat: irc.freenode.com > #zarafa
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    No support via PM! Please contact our sales team for an offer if you want my full attention.

  4. #14
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    Zarafa's position is that a license is not needed to use z-push on your server. Further Microsoft does not have a license to use z-push, since it is GPL and they don't license EAS for use with GPL software. As long as Microsoft didn't knock on the door of Zarafa, I guess we are on the safe side.

  5. #15
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    I still have questions about this.

    As the documentation of EAS is open, I created an Add-On for Thunderbird to sync Contacts and Calendar via Exchange ActiveSync. An EAS client so to say.
    https://github.com/jobisoft/TbSync/w...to-get-started

    This can be used to sync between Thunderbird and any Zarafa server with Z-Push, but also to sync between Thunderbird and any Microsoft Exchange Server supporting EAS. It also works with outlook.com.

    Will I get in trouble, when I distribute this Add-On via the Thunderbird Add-On repository without any licence?

    Yours
    John
    Last edited by jobisoft; 28-01-2017 at 01:35 PM.

  6. #16
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    Hi John,

    only a lawyer could respond that and also probably not for sure as it is a matter of interpretation.

    Why are you thinking about distributing it without any licence? In my opinion it would be better to distribute it under some Open Source licence, like GPL v3 or AGPL v3.

    Greets, Manfred
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    I usually check the mobility thread at the end of the day, so please have some patience if there's no immediate response. Asking to look at certain thread per PM won't result in a faster answer.

  7. #17
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    sorry, wrong wording.

    It is of course released under an open source software lic (GPL 2.0).

    But I do not have an ActiveSync lic. It is really hard to figure out, what is patent protected, I mean, all I do is sending packets to a server and evaluate its answers. The protocol itself is published by Microsoft and I implemented it by myself.

  8. #18
    Senior Member
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    Hi John,

    I suppose it comes down if you're charging money for it and if it's worth for the patent holder to sue you. From your description I'd say you don't have to fear a lawsuit, but I'm not a lawyer, that's just my opinion.

    I suggest you to contact an attorney specialising in open source software for a more solid statement.

    Manfred
    Please do not PM me asking for support. Use the forum instead. Thank you.
    I usually check the mobility thread at the end of the day, so please have some patience if there's no immediate response. Asking to look at certain thread per PM won't result in a faster answer.

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