Results 1 to 8 of 8

Thread: Split Domain with Zimbra as virus/spam scanning gateway

  1. #1
    Join Date
    Dec 2005
    Posts
    44
    Rep Power
    10

    Default Split Domain with Zimbra as virus/spam scanning gateway

    If I were to configure a Zimbra server per Deployment Scenario B in the Split Domain wiki entry (Split Domain - ZimbraWiki) with Zimbra accepting mail from the Internet and relaying all mail to a separate internal mail server, would Zimbra perform virus/spam scanning before relaying? Or would it simply relay with no virus/spam scanning?

    The sentence in the wiki that reads "Since Zimbra can perform inbound email prescreening..." makes it sound like it would perform virus/spam scanning, but I just wanted to confirm that and see if anybody had experience with it.

    Thanks.

  2. #2
    Join Date
    Oct 2007
    Posts
    4
    Rep Power
    8

    Default

    Hi mubley,

    This is exactly what is happening to me right now. Did you find a solution?

    Regards

  3. #3
    Join Date
    Nov 2009
    Location
    London Ontario
    Posts
    11
    Rep Power
    6

    Default

    Quote Originally Posted by quetzal View Post
    Hi mubley,

    This is exactly what is happening to me right now. Did you find a solution?

    Regards
    Same here. It is not adding any X-SPAM-LEVEL type headers. It would suit me if it did. Anybody know what needs to be chnged from the default setup?

  4. #4
    Join Date
    Nov 2009
    Location
    London Ontario
    Posts
    11
    Rep Power
    6

    Default

    Quote Originally Posted by vavai View Post
    Hi,


    I'm using Zimbra as front-end mail server and act as Anti Virus + Anti spam for the back-end mail server using Microsoft Exchange Server on such client as a step before migrating Exchange.

    In my scenario, Zimbra will not saved any mailbox (except Admin and another default account) so I used following command :

    Code:
    su - zimbra
    zmprov md example.com zimbraMailCatchAllAddress @example.com
    zmprov md example.com zimbraMailCatchAllForwardingAddress @example.com
    zmprov md example.com zimbraMailTransport smtp:mail.example.com
    Note : mail.example.com using Exchange server. I set the incoming MX records to point to Zimbra host/IP.

    The above configuration will make Zimbra to perform virus & spam check for incoming mail and then relay the passed-check mail to the backend mail server.
    So you accept mail for non existant accounts, check that mail for vrus and spam and then forward that mail to the Exchange server that complains no such account? I don't like that too much.

    I've got local users on my zimbra server and I have some users on an Exchange server in another building, split domain. I would like Zimbra to add the X-SPAM-LEVEL header to emails that it directs to the exchange server as they don't have an antispam system on the Exchange server. I could then use filters (I hope) in outlook to move emails to Spam based on the X-SPAM-LEVEL header. Any hints?

    Thanks!

  5. #5
    Join Date
    Nov 2009
    Location
    London Ontario
    Posts
    11
    Rep Power
    6

    Default

    Quote Originally Posted by vavai View Post
    Please CMIIW, you need the above set for certain user, aren't you ?
    Yes, Zimbra does not add the X-SPAM-LEVEL unless it delivers it to a local mailbox. Is there a way to make it add these headers before redirecting to the Exchange server.

    It does add a X-Virus-Scanned: amavisd-new at example.com to the headers.

    Thanks.

  6. #6
    Join Date
    Aug 2009
    Posts
    16
    Rep Power
    6

    Default Same here

    Ours is configured as stated above using the split domain.

    Once the mail is received, processed and delivered...it's missing any spam related stuff.
    It does have the virus scanner headers
    Code:
    X-Virus-Scanned: amavisd-new at our.zimbra.server.net
    Any help would be appreciated. If I find a solution I'll post back.
    Thanks!

  7. #7
    Join Date
    Nov 2009
    Location
    London Ontario
    Posts
    11
    Rep Power
    6

    Default

    I did realise that Zimbra does add the x-spam headers however the system that I was sending to was removing them, leaving only the X-Virus-Scanned. Take a good look at the destination server and be sure it is not removeing the X-SPAM headers.

  8. #8
    Join Date
    Aug 2009
    Posts
    16
    Rep Power
    6

    Default Thanks!

    Thanks for the idea. I don't think our destination server removes the tags though.

    We're delivering to a groupwise server and have been performing mail filtering for some time through a different homebrew service (using MailScanner). I just checked one of the older messages (below)

    Further Testing:
    When sending a test email (including copied bits of spam messages to push the points up for SA) into a local account on the zimbra server; the mail gets flagged, subject rewrite, and delivered to 'junk'.

    Sending the same message for delivery to a relayed domain, we just get the virus scanner header; no spam flagging, no subject rewrites, etc.

    Thanks again for your thoughts sumo


    Code:
    Subject: [SPAM] Personal postmaster 79% Off
    
    MIME-Version: 1.0
    
    Content-Type: text/html; charset="ISO-8859-1"
    
    Content-Transfer-Encoding: 7bit
    
    X-DCS-MailScanner-Information: Please contact the ISP for more information
    
    X-DCS-MailScanner: Found to be clean
    
    X-DCS-MailScanner-SpamCheck: spam (blacklisted)
    
    X-DCS-MailScanner-From: postmaster@domain.com
    X-Spam-Status: Yes

Similar Threads

  1. [SOLVED] Error Installing Zimbra on RHEL 5
    By harris7139 in forum Installation
    Replies: 10
    Last Post: 09-25-2007, 12:39 PM
  2. Replies: 8
    Last Post: 02-27-2007, 04:10 AM
  3. zimbra-core missing
    By kinaole in forum Developers
    Replies: 1
    Last Post: 10-02-2006, 12:59 PM
  4. 3.1 on FC4 problems
    By cohnhead in forum Installation
    Replies: 8
    Last Post: 05-26-2006, 12:16 PM
  5. FC3 Install and no zimbra ?
    By aws in forum Installation
    Replies: 10
    Last Post: 10-09-2005, 05:19 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •