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Thread: [SOLVED] Help with external clients

  1. #1
    Viking0 is offline Active Member
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    Default [SOLVED] Help with external clients

    Hello.

    Im using zimbra 5.0.11 and its working fine for my internal clients, but I have several users that works outside the office and need to use outlook on theri laptops.
    They can send email within the domain without problems but they get relay error for mails going outside the domain.
    I solved this specifying their IP in the mta, but now I'm getting an error that tells me that the field is only 250 character long and I cant put in more IP.

    What can I do for solving this problem.

    Regards

  2. #2
    uxbod's Avatar
    uxbod is offline Moderator
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    Could you not setup a VPN connection and then allow that network block to relay or look at using SMTP AUTH ?

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    Viking0 is offline Active Member
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    I'm trying smtp auth. seems to work fine.

    Thanks

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    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by Viking0 View Post
    I solved this specifying their IP in the mta, but now I'm getting an error that tells me that the field is only 250 character long and I cant put in more IP.
    Do not specify the users IP addresses in the mynetwork field unless you trust the external network/IP 100%, you open your server to the possibility of being an open relay. Authenticated connection is what's needed for roaming users, please remove the IPs from the server.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

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    Viking0 is offline Active Member
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    thanks.

    I configurated smtp auth in the outlooks clients and it works just fine.

    I'll remove the IP like you suggested.

    Regards

  6. #6
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by Viking0 View Post
    thanks.

    I configurated smtp auth in the outlooks clients and it works just fine.

    I'll remove the IP like you suggested.

    Regards
    Just for clarification, you should only have the loopback IP and the the LAN subnet that your server is on for that field. Read the details in this wiki article so you understand what's involved and what that field does.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

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    Viking0 is offline Active Member
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    Thanks.

    I left only the ips for the lan subnets - loopbak and an ip for an external server that realys on my server.

    Regards

  8. #8
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by Viking0 View Post
    I left only the ips for the lan subnets - loopbak and an ip for an external server that realys on my server.
    You would be far better getting the remote mail server to authenticate as well and remove their IP from your mynetworks. The same rule applies, they would be able to use you as an open relay if their machine was compromised - if you're happy letting them relay then it's fine the way you have it.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

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    Viking0 is offline Active Member
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    Thanks again for your recomendation.

    I'll comented it with the server administrator and we will change the software scripts.

    Regards

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