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Thread: No mail sent or received since router change!

  1. #1
    ukturtle is offline Senior Member
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    Default No mail sent or received since router change!

    Hi

    I'm running ZCS 7.1.1 GA 3196.UBUNTU10_64 UBUNTU10_64 FOSS edition inside a Virtualbox VM.

    The server has been running absolutely brilliantly since I installed in March.

    However, recently I had some problems with my router (provided by my ISP) where my ADSL line kept dropping out so I had to change it for another router.

    The router I changed it for was an original router I used to use and the IP addresses ranges and everything were set up just the same as the faulty router except for 1 thing and that was the IP address of the router itself. The faulty router (and therefore my default gateway on all my machines) was set to 192.168.20.254, whereas my replacement router was set to 192.168.20.1.

    So, when this router change happened my ZCS stopped sending/receiving mail so I figured there must be the old .254 address somewhere in one of the config files. I went digging around and of course it was set up in BIND as a forwarder in named.conf.options.

    I changed that IP to be 192.168.20.1, changed the serial number in db.<domain> (not sure if I needed to do this or not) and restarted BIND hoping this would fix the problem but it hasn't.

    If I login to the webclient and try to send an email, when I click the 'Send' button it just sits there for a few seconds and then comes up with a 'Work In Progress' box saying 'The server appears to be slow to respond, and may be unavailable. Press the button to cancel your request.'

    I can't see anything in any of the logs that looks like an error so I'm really confused as to what is happening here.

    If someone could help me I would be VERY grateful.

    I've attached the logs.

    Here's my BIND setup:
    named.conf
    Code:
    // This is the primary configuration file for the BIND DNS server named.
    //
    // Please read /usr/share/doc/bind9/README.Debian.gz for information on the 
    // structure of BIND configuration files in Debian, *BEFORE* you customize 
    // this configuration file.
    //
    // If you are just adding zones, please do that in /etc/bind/named.conf.local
    
    include "/etc/bind/named.conf.options";
    include "/etc/bind/named.conf.local";
    include "/etc/bind/named.conf.default-zones";
    db.brynjellis.me.uk
    Code:
    ;
    ; BIND data file for local loopback interface
    ;
    $TTL    604800
    @       IN      SOA     zimbra.brynjellis.me.uk. hostmaster.brynjellis.me.uk. (
                       201111061442         ; Serial
                             604800         ; Refresh
                              86400         ; Retry
                            2419200         ; Expire
                             604800 )       ; Negative Cache TTL
    ;
    brynjellis.me.uk.       IN      NS      zimbra.brynjellis.me.uk.
    brynjellis.me.uk.       IN      MX      10 zimbra.brynjellis.me.uk.
    brynjellis.me.uk.       IN      A       192.168.20.17
    zimbra.brynjellis.me.uk.        IN      A       192.168.20.17
    named.conf.options
    Code:
    options {
            directory "/var/cache/bind";
    
            // If there is a firewall between you and nameservers you want
            // to talk to, you may need to fix the firewall to allow multiple
            // ports to talk.  See http://www.kb.cert.org/vuls/id/800113
    
            // If your ISP provided one or more IP addresses for stable 
            // nameservers, you probably want to use them as forwarders.  
            // Uncomment the following block, and insert the addresses replacing 
            // the all-0's placeholder.
    
            forwarders      { 
                                    192.168.20.1;
                             };
    };
    //include "/etc/bind/rndc.key";
    
            //auth-nxdomain no;    # conform to RFC1035
            // listen-on-v6 { any; };
    
            // we are the mast server for zimbra.brynjellis.me.uk
            //zone "brynjellis.me.uk" {
            //      type master;
            //      file "/etc/bind/db.brynjellis.me.uk";
    //};
    named.conf.local
    Code:
    //
    // Do any local configuration here
    //
    
    // Consider adding the 1918 zones here, if they are not used in your
    // organization
    //include "/etc/bind/zones.rfc1918";
    
    zone "brynjellis.me.uk" {
            type master;
            file "/etc/bind/db.brynjellis.me.uk";
    };
    Attached Files Attached Files

  2. #2
    phoenix is online now Zimbra Consultant & Moderator
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    Default

    Go to the Split DNS article and post the output of all the commands in the 'Verify...' section of that article.

    BTW, looking at your DNS records they don't appear to be correct. This is the output I get for them:

    Code:
    dig brynjellis.me.uk any
    
    ; <<>> DiG 9.8.1 <<>> brynjellis.me.uk any
    ;; global options: +cmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46460
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 3
    
    ;; QUESTION SECTION:
    ;brynjellis.me.uk.              IN      ANY
    
    ;; ANSWER SECTION:
    brynjellis.me.uk.       385     IN      NS      ns2.myhostcp.com.
    brynjellis.me.uk.       385     IN      MX      10 212.159.114.178.
    brynjellis.me.uk.       385     IN      NS      ns1.myhostcp.com.
    brynjellis.me.uk.       385     IN      NS      ns3.myhostcp.com.
    
    ;; ADDITIONAL SECTION:
    ns3.myhostcp.com.       385     IN      A       217.194.209.3
    ns2.myhostcp.com.       385     IN      A       79.171.34.19
    ns1.myhostcp.com.       385     IN      A       79.171.34.18
    
    ;; Query time: 2 msec
    ;; SERVER: 192.168.1.10#53(192.168.1.10)
    ;; WHEN: Tue Nov 15 11:44:00 2011
    ;; MSG SIZE  rcvd: 179
    Code:
    dig brynjellis.me.uk mx
    
    ; <<>> DiG 9.8.1 <<>> brynjellis.me.uk mx
    ;; global options: +cmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34745
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
    
    ;; QUESTION SECTION:
    ;brynjellis.me.uk.              IN      MX
    
    ;; ANSWER SECTION:
    brynjellis.me.uk.       380     IN      MX      10 212.159.114.178.
    
    ;; Query time: 1 msec
    ;; SERVER: 192.168.1.10#53(192.168.1.10)
    ;; WHEN: Tue Nov 15 11:44:05 2011
    ;; MSG SIZE  rcvd: 65
    Your MX record should contain the FQDN of your mail server not the IP address.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    ukturtle is offline Senior Member
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    Hi Bill

    Thanks for the amazingly quick reply as always. You always seem to get the short straw in dealing with the problems I have.

    I'm not sure what you mean (if I'm honest) when you say my MX record should have the FQDN of my mailserver? You see, my mailserver is on a virtual machine on my Linux workstation and all I do is add a port forwarding rule on my router to direct SMTP/IMAP/SSL/ADMIN(7071) traffic to my vm running ZCS. So my mail server doesn't really have an FQDN out on the web does it? Besides, I've not changed any of the settings at my registrar DNS since March.

    Feel free to put me right because as you may remember from helping me get all this setup in the 1st place I'm useless when it comes to DNS etc.

    Regards
    Bryn

  4. #4
    phoenix is online now Zimbra Consultant & Moderator
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    Default

    Quote Originally Posted by ukturtle View Post
    I'm not sure what you mean (if I'm honest) when you say my MX record should have the FQDN of my mailserver? You see, my mailserver is on a virtual machine on my Linux workstation and all I do is add a port forwarding rule on my router to direct SMTP/IMAP/SSL/ADMIN(7071) traffic to my vm running ZCS. So my mail server doesn't really have an FQDN out on the web does it? Besides, I've not changed any of the settings at my registrar DNS since March.
    Your external DNS records (and internal ones, for that matter) should have the following format:

    Code:
    brynjellis.me.uk.       380     IN      MX      10 mail.brynjellis.me.uk
    
    mail.brynjellis.me.uk.       380     IN      A      212.159.114.178.
    You should also post the output from the Split DNS article I mentioned earlier - just to confirm that's all OK. The change of router really shouldn't have changed anything as far as Zimbra is concerned.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  5. #5
    ukturtle is offline Senior Member
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    Thanks Bill

    I've changed my registrar DNS to be like you said.

    Here's the output from dig run on the zimbra server:
    Code:
    bryn@zimbra:~$ dig brynjellis.me.uk mx
    
    ; <<>> DiG 9.7.0-P1 <<>> brynjellis.me.uk mx
    ;; global options: +cmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17853
    ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
    
    ;; QUESTION SECTION:
    ;brynjellis.me.uk.		IN	MX
    
    ;; ANSWER SECTION:
    brynjellis.me.uk.	604800	IN	MX	10 zimbra.brynjellis.me.uk.
    
    ;; AUTHORITY SECTION:
    brynjellis.me.uk.	604800	IN	NS	zimbra.brynjellis.me.uk.
    
    ;; ADDITIONAL SECTION:
    zimbra.brynjellis.me.uk. 604800	IN	A	192.168.20.17
    
    ;; Query time: 11 msec
    ;; SERVER: 192.168.20.17#53(192.168.20.17)
    ;; WHEN: Tue Nov 15 12:12:31 2011
    ;; MSG SIZE  rcvd: 87
    Code:
    bryn@zimbra:~$ dig brynjellis.me.uk any
    
    ; <<>> DiG 9.7.0-P1 <<>> brynjellis.me.uk any
    ;; global options: +cmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47475
    ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1
    
    ;; QUESTION SECTION:
    ;brynjellis.me.uk.		IN	ANY
    
    ;; ANSWER SECTION:
    brynjellis.me.uk.	604800	IN	SOA	zimbra.brynjellis.me.uk. hostmaster.brynjellis.me.uk. 3542565826 604800 86400 2419200 604800
    brynjellis.me.uk.	604800	IN	NS	zimbra.brynjellis.me.uk.
    brynjellis.me.uk.	604800	IN	MX	10 zimbra.brynjellis.me.uk.
    brynjellis.me.uk.	604800	IN	A	192.168.20.17
    
    ;; ADDITIONAL SECTION:
    zimbra.brynjellis.me.uk. 604800	IN	A	192.168.20.17
    
    ;; Query time: 35 msec
    ;; SERVER: 192.168.20.17#53(192.168.20.17)
    ;; WHEN: Tue Nov 15 12:14:31 2011
    ;; MSG SIZE  rcvd: 150
    Here's the output from dig run on my local workstation:
    Code:
    bryn@blackbird:~$ dig brynjellis.me.uk mx
    
    ; <<>> DiG 9.7.0-P1 <<>> brynjellis.me.uk mx
    ;; global options: +cmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 38350
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
    
    ;; QUESTION SECTION:
    ;brynjellis.me.uk.		IN	MX
    
    ;; ANSWER SECTION:
    brynjellis.me.uk.	600	IN	MX	10 mail.brynjellis.me.uk.
    
    ;; ADDITIONAL SECTION:
    mail.brynjellis.me.uk.	600	IN	A	212.159.114.178
    
    ;; Query time: 75 msec
    ;; SERVER: 192.168.20.1#53(192.168.20.1)
    ;; WHEN: Tue Nov 15 12:15:31 2011
    ;; MSG SIZE  rcvd: 71
    Code:
    bryn@blackbird:~$ dig brynjellis.me.uk any
    
    ; <<>> DiG 9.7.0-P1 <<>> brynjellis.me.uk any
    ;; global options: +cmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46526
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 3
    
    ;; QUESTION SECTION:
    ;brynjellis.me.uk.		IN	ANY
    
    ;; ANSWER SECTION:
    brynjellis.me.uk.	587	IN	NS	ns2.myhostcp.com.
    brynjellis.me.uk.	587	IN	NS	ns3.myhostcp.com.
    brynjellis.me.uk.	587	IN	NS	ns1.myhostcp.com.
    
    ;; ADDITIONAL SECTION:
    ns1.myhostcp.com.	320	IN	A	79.171.34.18
    ns2.myhostcp.com.	320	IN	A	79.171.34.19
    ns3.myhostcp.com.	320	IN	A	217.194.209.3
    
    ;; Query time: 72 msec
    ;; SERVER: 192.168.20.1#53(192.168.20.1)
    ;; WHEN: Tue Nov 15 12:16:51 2011
    ;; MSG SIZE  rcvd: 148

  6. #6
    ukturtle is offline Senior Member
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    Is it because on my zimbra server (local BIND configuration) I have my MX record set up as zimbra.brynjellis.me.uk but on my registrar I've now changed it to what Bill suggested mail.brynjellis.me.uk?

    An email I sent from my Gmail account to my brynjellis.me.uk account a few days ago as been retrying and I've just noticed this is what it's saying:

    Delivery to the following recipient failed permanently:

    bryn@brynjellis.me.uk

    Technical details of permanent failure:
    The recipient server did not accept our requests to connect. Learn more at 'The recipient server did not accept our requests...' - Gmail Help
    [mail.brynjellis.me.uk. (10): No route to host]
    Last edited by ukturtle; 11-17-2011 at 06:28 AM.

  7. #7
    ukturtle is offline Senior Member
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    It's all gone quiet. I'm still not getting any mail. Still getting the same problems.

    Any help would be much appreciated please?

    Thank you in anticipation.

  8. #8
    ukturtle is offline Senior Member
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    Something has happened but I don't know what!!

    I'm able to send email now and the recipient receives almost immediately but I still can't receive.

    Here is the message I get when I try to send from my gmail account to my brynjellis.me.uk account:
    Code:
    Mail Delivery Subsystem mailer-daemon@googlemail.com
    09:35 (35 minutes ago)
    
    to me 
    This is an automatically generated Delivery Status Notification
    
    THIS IS A WARNING MESSAGE ONLY.
    
    YOU DO NOT NEED TO RESEND YOUR MESSAGE.
    
    Delivery to the following recipient has been delayed:
    
        bryn@brynjellis.me.uk
    
    Message will be retried for 2 more day(s)
    
    Technical details of temporary failure:
    Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 454 454 4.7.0 TLS not available due to local problem (state 9).
    
    ----- Original message -----
    
    MIME-Version: 1.0
    Received: by 10.236.131.97 with SMTP id l61mr34093725yhi.51.1322037326777;
     Wed, 23 Nov 2011 00:35:26 -0800 (PST)
    Received: by 10.150.144.9 with HTTP; Wed, 23 Nov 2011 00:35:26 -0800 (PST)
    In-Reply-To: <f97a0193-25d3-411b-991c-4976b19ba045@zimbra>
    References: <f97a0193-25d3-411b-991c-4976b19ba045@zimbra>
    Date: Wed, 23 Nov 2011 08:35:26 +0000
    Message-ID: <CAKByOjCq-kZnskjCTT++kHXax4h8sweaZFhqn3pae6_=wPe95g@mail.gmail.com>
    Subject: Re: Testing Wed 23rd Nov 08:33
    From: Bryn Ellis <brynjellis@gmail.com>
    To: Bryn Ellis <bryn@brynjellis.me.uk>
    Content-Type: multipart/alternative; boundary=20cf300e568b3e0c5c04b262cd05
    Would really love to get this working please as I'm missing all the emails that would normally be going here.

    Regards
    Bryn

  9. #9
    ukturtle is offline Senior Member
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    Arrrgggghhhh!!! Am I going mad?!!

    It seems to be just my Gmail account that is not able to send emails to my brynjellis.me.uk account! I've just tested send an email from my work email address and it arrived immediately. So I logged into another work email address that we use for our helpdesk and runs through Google Apps, send an email from there and I received that straight away too!

    So now I'm really confused and have no idea what the problem might be. Anybody any ideas?

    Thanks in anticipation.
    Bryn

  10. #10
    ukturtle is offline Senior Member
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    Seriously confused now! Confused a) by the sudden lack of response from a normally excellent forum and b) but the fact that this is now not working again.

    I'm getting the same issues, no email being sent and none being received anymore. All the same symptoms as explained in previous posts.

    Can anyone help me please?

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