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Thread: Another problem sending to Yahoo accounts.

  1. #1
    bneiman is offline Junior Member
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    Default Another problem sending to Yahoo accounts.

    OK, I am a newbie to Linux and Zimbra. I am running ZCS on an Ubuntu 8.04 server. I can send email to anyone except for yahoo.com users. I have searched the forum, but I am not getting something. I know it has to do with DNS and PTR records. We have a block of static IPs with Qwest, and I contacted them to add a PTR record to reverse DNS to mydomain. I am including a portion of the zimbra.log file and a dig qwery.

    Code:
    Mar 18 10:20:02 mail zimbramon[13364]: 13364:info: 2009-03-18 10:20:02, QUEUE: 0 0
    Mar 18 10:20:10 mail postfix/smtpd[13528]: connect from mail.mydomain.com[10.0.0.10]
    Mar 18 10:20:10 mail postfix/smtpd[13528]: 9EEFC22823A: client=mail.mydomain.com[10.0.0.10]
    Mar 18 10:20:10 mail postfix/cleanup[13533]: 9EEFC22823A: message-id=<6193963.151237389609338.JavaMail.root@mail>
    Mar 18 10:20:10 mail postfix/smtpd[13528]: disconnect from mail.mydomain.com[10.0.0.10]
    Mar 18 10:20:10 mail postfix/qmgr[24577]: 9EEFC22823A: from=, size=670, nrcpt=1 (queue active)
    Mar 18 10:20:13 mail zimbramon[13374]: 13374:info: 2009-03-18 10:20:07, DISK: mail.mydomain.com: dev: /dev/sda1, mp: /, tot: 36492, avail: 31619
    Mar 18 10:20:16 mail amavis[7441]: (07441-02) ESMTP::10024 /opt/zimbra/data/amavisd/tmp/amavis-20090316T154623-07441:  ->  SIZE=670 Received: from mail.mydomain.com ([127.0.0.1]) by localhost (mail.mydomain.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP for ; Wed, 18 Mar 2009 10:20:15 -0500 (CDT)
    Mar 18 10:20:16 mail amavis[7441]: (07441-02) Checking: l3jdA+93zqbb [10.0.0.10]  -> 
    Mar 18 10:20:19 mail clamd[7395]: SelfCheck: Database status OK.
    Mar 18 10:20:35 mail postfix/smtpd[13683]: connect from localhost.mydomain.com[127.0.0.1]
    Mar 18 10:20:36 mail postfix/smtpd[13683]: 1715222823B: client=localhost.mydomain.com[127.0.0.1]
    Mar 18 10:20:36 mail postfix/cleanup[13533]: 1715222823B: message-id=<6193963.151237389609338.JavaMail.root@mail>
    Mar 18 10:20:36 mail postfix/qmgr[24577]: 1715222823B: from=, size=1122, nrcpt=1 (queue active)
    Mar 18 10:20:36 mail postfix/smtpd[13683]: disconnect from localhost.mydomain.com[127.0.0.1]
    Mar 18 10:20:36 mail amavis[7441]: (07441-02) FWD via SMTP:  -> ,BODY=7BIT 250 2.6.0 Ok, id=07441-02, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 1715222823B
    Mar 18 10:20:36 mail amavis[7441]: (07441-02) Passed CLEAN, LOCAL [10.0.0.10] [10.0.0.10]  -> , Message-ID: <6193963.151237389609338.JavaMail.root@mail>, mail_id: l3jdA+93zqbb, Hits: -2.499, size: 670, queued_as: 1715222823B, 23079 ms
    Mar 18 10:20:36 mail postfix/smtp[13542]: 9EEFC22823A: to=, relay=127.0.0.1[127.0.0.1]:10024, delay=26, delays=0.25/0.09/4.1/22, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 1715222823B)
    Mar 18 10:20:36 mail postfix/qmgr[24577]: 9EEFC22823A: removed
    Mar 18 10:20:37 mail zmmailboxdmgr[13765]: status requested
    Mar 18 10:20:37 mail zmmailboxdmgr[13765]: status OK
    Mar 18 10:20:41 mail postfix/smtp[13732]: 1715222823B: host g.mx.mail.yahoo.com[206.190.53.191] refused to talk to me: 421 Message from (1.2.3.4) temporarily deferred - 4.16.50. Please refer to http://help.yahoo.com/help/us/mail/defer/defer-06.html
    Mar 18 10:20:42 mail postfix/smtp[13732]: 1715222823B: to=, relay=c.mx.mail.yahoo.com[216.39.53.3]:25, delay=6.5, delays=0.12/0.07/5.2/1.1, dsn=2.0.0, status=sent (250 ok dirdel)
    Mar 18 10:20:42 mail postfix/qmgr[24577]: 1715222823B: removed
    
    
    
    
    user@mail:/var/log$ dig -x 1.2.3.4
    
    ; <<>> DiG 9.4.2-P2 <<>> -x 1.2.3.4
    ;; global options:  printcmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23287
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 3
    
    ;; QUESTION SECTION:
    ;4.3.2.1.in-addr.arpa.    IN      PTR
    
    ;; ANSWER SECTION:
    4.3.2.1.in-addr.arpa. 43200 IN    PTR     mydomain.com.
    
    ;; AUTHORITY SECTION:
    3.2.1.in-addr.arpa. 43200   IN      NS      authns2.dnvr.qwest.net.
    3.2.1.in-addr.arpa. 43200   IN      NS      authns1.mpls.qwest.net.
    3.2.1.in-addr.arpa. 43200   IN      NS      authns3.sttl.qwest.net.
    
    ;; ADDITIONAL SECTION:
    authns3.sttl.qwest.net. 30941   IN      A       206.81.192.11
    authns2.dnvr.qwest.net. 30941   IN      A       206.196.128.12
    authns1.mpls.qwest.net. 30941   IN      A       63.231.205.1
    
    ;; Query time: 1745 msec
    ;; SERVER: 10.0.0.10#53(10.0.0.10)
    ;; WHEN: Wed Mar 18 10:23:45 2009
    ;; MSG SIZE  rcvd: 208
    Names and actual IP addresses have been changes. 10.0.0.10 is the local ip address of the server. 1.2.3.4 represents our public ip address.

    I would greatly appreciate any help.

  2. #2
    uxbod's Avatar
    uxbod is offline Moderator
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    Your RDNS is entry is pointing to your domain and not your ZCS servername.

  3. #3
    bneiman is offline Junior Member
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    I am not getting this. I believe the problem is that I am basically dealing with 3 different DNS servers. Qwest owns our static IP address block, and I have had them add a PTR record, and rDNS. Godaddy is the domain registrar, and I have added a SPF record and TXT record for the domain name. And then we have localhost which also has a DNS server. Not sure what I need to add to that.

    It is a split DNS setup, and I followed the instructions Here.

    Would it help if I posted the real domain name and IP addresses? This is only a test server, and the domain and IP will change if we ever get this into production.

  4. #4
    uxbod's Avatar
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    Yep, that would be useful so we can perform some checking.

  5. #5
    Bill Brock is offline Outstanding Member
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    Default Yahoo defers....

    a lot of mail from my server even though the PTR, MX, and A records all are correct. My IP is not on any rbl lists either. These mails seem to eventually get delivered however.

    I don't know what Yahoo is using to make the decision to defer mail but it is not DNS or RBL in my case.

    Do your messages ever get delivered?

  6. #6
    uxbod's Avatar
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    Perhaps aswell as SPF records you should look at using DomainKeys Identified Mail (DKIM).

  7. #7
    bneiman is offline Junior Member
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    Quote Originally Posted by uxbod View Post
    Yep, that would be useful so we can perform some checking.
    domain name is cwitdept.com
    mail server is mail.cwitdept.com
    static ip is 71.39.120.105

  8. #8
    uxbod's Avatar
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    I believe Y! check DKIM so you may wish to set it up on your server and then test it out :- DKIM Testing

  9. #9
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by bneiman View Post
    domain name is cwitdept.com
    mail server is mail.cwitdept.com
    static ip is 71.39.120.105
    You actually have an incorrect DNS set-up, read this: Quick Check - Pingability.com
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  10. #10
    bneiman is offline Junior Member
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    Quote Originally Posted by phoenix View Post
    You actually have an incorrect DNS set-up, read this: Quick Check - Pingability.com
    Can you expand on that a little? Is this what you are talking about?

    "The MX record value 'mail.cwitdept.com' points to a CNAME. It must point to a host name with an A record."

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