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Thread: How To Run Multiple Physical ZCS FOSS on Dynamic IP

  1. #1
    spectra is offline Special Member
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    Default How To Run Multiple Physical ZCS FOSS on Dynamic IP

    Ok, guys I might be wanting to do the unthinkable but here goes.

    I know how to run a physical ZCS FOSS on a dynamic IP behind a firewall (IPCop).
    Basically, I forward ports 25, 443, 7071, and 22 to the physical server.
    I know how to do this configuration with SplitDNS and all that.
    In my configuration, I use zimbra to receive a copy of emails from my real email server.
    Also, I have my users use zimbra itself to email back and forth.
    Under the hood, I use SMTP Auth technique to relay emails from zimbra to my real email server.
    I don't use the desktop client, just to be clear. All web

    Now why couldnt I setup a 2nd physical box and forward ports as shown:
    225 -> 25
    4443 -> 443
    7701 -> 7071
    2222 -> 22
    It seems the real question is this.
    To pull this off wouldn't I need to get into the 2nd physical server configuration and tell it not to use port 25 but rather port 225 ?
    If that's he case then I wouldn't need to port forward 225 to 25 right ?
    So, where and how do I tell zimbra not to use the standard port 25 for it's business but the port I say ?

    Any other problems with what I want to do ?
    --
    3 out of 2 people have truble wit inglish and fraktions
    Intel Quad Core Xeon CPU 3.20GHz | 2 Gig RAM | Dual SCSI 73 Gig HDD
    Ubuntu Server 12.04.1 LTS 64 bit | Release 8.0.2_GA_5569 (build 20121210115059) UBUNTU12_64 FOSS

  2. #2
    anudeep@itopstube.com's Avatar
    anudeep@itopstube.com is offline Active Member
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    as you specified above, you have one external IP and you are planning to NAT the ports to internal IP right? if its the thing, there is no problem

    only thing you need to be avair of port forwarding. some thing your blue print is like this..

    E.g:

    your external IP :1.1.1.1
    your internal IP : 10.0.0.1 (primary mail server (or) production mail server)
    your internal IP : 10.0.0.2 (secondary mail server (or) test mail server)

    port forward:

    1.1.1.1:225 ---> 10.0.0.2:25 (smtp)
    1.1.1.1:4443 ---> 10.0.0.2:443 (https)
    1.1.1.1:7701 ---> 10.0.0.2:7071 (admin port)
    1.1.1.1:2222 ---> 10.0.0.2:22 (ssh)

  3. #3
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by anudeep@itopstube.com View Post
    only thing you need to be avair of port forwarding. some thing your blue print is like this..
    Except for this:

    Quote Originally Posted by anudeep@itopstube.com View Post
    1.1.1.1:225 ---> 10.0.0.2:25 (smtp)
    No external mail will be received on that port as SMTP only transmits mail on port 25.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  4. #4
    spectra is offline Special Member
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    phoenix & anudeep@itopstube.com
    Here's the deal.

    Per phoenix, is there a way to get the 2nd zimbra install to transmit email ( relay email ) via a different port besides 25.
    Is this why I have to open 25 on my fireway becasue zimbra uses it under the hood to relay emails from zimbra outward ?
    Dunno why I'm confused on that, seems like the port is open to allow traffic in. My situation my users dont use clients to smtp out via zimbra.
    My users do everything within zimbra.

    Anundeep
    Be advised that your depiction is almost correct.
    I am running 2 different local email servers for different domains. Not a primary and secondary mail servers.


    So folks, the question is, why is port 25 in the mix in my case anyway ?
    I dont have users connecting from the outside world to the zimbra install via smtp to send emails.
    They do all webmail via zimbra.
    All in all it seems like I dont need port 25 at all. Is that right ?

    So without port 25 being an issue, seems like I would be okay ? right ?

    I think Id like to solve this, document this and post this.
    I can see other small users wanting to do this.
    --
    3 out of 2 people have truble wit inglish and fraktions
    Intel Quad Core Xeon CPU 3.20GHz | 2 Gig RAM | Dual SCSI 73 Gig HDD
    Ubuntu Server 12.04.1 LTS 64 bit | Release 8.0.2_GA_5569 (build 20121210115059) UBUNTU12_64 FOSS

  5. #5
    anudeep@itopstube.com's Avatar
    anudeep@itopstube.com is offline Active Member
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    spectra, please let me know your detailed requirement to suggest for best.

    and why you need two mail servers configured in our environment? even zimbra is by default multitenant.

    Thanks,
    Anudeep.

  6. #6
    spectra is offline Special Member
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    Simple, I have introduced zimbra to small businesses.
    They like it and buy their own box to run it.
    They want me to manage the box for them.
    Just how they are.
    I wont burn IPs if I don't have to.

    Now back to the issue.
    I simply what to run at least 2 physical boxes via a dynamic IP in my office.
    As stated before. I know how to setup and run a single box.
    Also, in my configuration, zimbra relays all outbound email from the zimbra web login via a real email server I maintain at a datacenter.
    Also is the fact that the users do everything via the zimbra web environment.

    So now, why is port 25 needed ? I raised the question of 225 fwd to 25 but then realized the real question is to understand why we need port 25.
    I do not have any of my users using zimbra as an smtp outbound server. Since I don't, why do I need port 25. Again, all my users use the zimbra https web environment.
    So, if port 25 is not needed then the worry of port 225 fwd to 25 is ZERO

    Clear..
    --
    3 out of 2 people have truble wit inglish and fraktions
    Intel Quad Core Xeon CPU 3.20GHz | 2 Gig RAM | Dual SCSI 73 Gig HDD
    Ubuntu Server 12.04.1 LTS 64 bit | Release 8.0.2_GA_5569 (build 20121210115059) UBUNTU12_64 FOSS

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