SOMA nature walk: moody tonight.

5 months ago
Tags: , ,
Location: 37° 46' 50.40" N, 122° 23' 57.60" W

7 Responses:

  1. Rony B Chandran says:
    5 months ago at 5:08 am

    Sorry to put this message here. I'm trying since last two weeks, but cannot hit your mailbox. Please reply.

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    failed:

    "jwz@jwz.org":
    domain has no mail exchangers

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  2. James says:
    5 months ago at 5:23 am

    $ nslookup
    > set type=mx
    > jwz.org
    Non-authoritative answer:
    jwz.org mail exchanger = 5 mail.jwz.org.

    Authoritative answers can be found from:
    > mail.jwz.org
    Non-authoritative answer:
    mail.jwz.org canonical name = cerebrum.dnalounge.com.

    Authoritative answers can be found from:
    dnalounge.com
    origin = dnalounge.com
    mail addr = hostmaster.dnalounge.com
    serial = 2012120721
    refresh = 3600
    retry = 900
    expire = 1209600
    minimum = 3600
    > cerebrum.dnalounge.com
    Non-authoritative answer:
    *** Can't find cerebrum.dnalounge.com: No answer
    ...
    $ nslookup cerebrum.dnalounge.com
    Non-authoritative answer:
    Name: cerebrum.dnalounge.com
    Address: 199.48.144.20
    • jwz says:
      5 months ago at 7:39 pm

      Beats me. Though I don't know why you're trying to hit cerebrum for directly for DNS.

      dig @8.8.8.8 any jwz.org

      ; <<>> DiG 9.8.3-P1 <<>> @8.8.8.8 any jwz.org
      ; (1 server found)
      ;; global options: +cmd
      ;; Got answer:
      ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51696
      ;; flags: qr rd ra; QUERY: 1, ANSWER: 7, AUTHORITY: 0, ADDITIONAL: 0

      ;; QUESTION SECTION:
      ;jwz.org. IN ANY

      ;; ANSWER SECTION:
      jwz.org. 3600 IN SOA jwz.org. hostmaster.jwz.org. 2012120721 3600 900 1209600 3600
      jwz.org. 3600 IN TXT "v=spf1 a mx ptr ~all"
      jwz.org. 3600 IN LOC 37 46 15.630 N 122 24 42.300 W 15.24m 6m 1m 1m
      jwz.org. 3600 IN NS ns2.appliedops.net.
      jwz.org. 3600 IN NS ns1.appliedops.net.
      jwz.org. 3600 IN MX 5 mail.jwz.org.
      jwz.org. 3600 IN A 199.48.144.22

      ;; Query time: 78 msec
      ;; SERVER: 8.8.8.8#53(8.8.8.8)
      ;; WHEN: Sat Jan 5 19:24:36 2013
      ;; MSG SIZE rcvd: 220
      • Jasper Wallace says:
        5 months ago at 9:28 am

        Strictly speaking you shouldn't have an mx record point to a CNAME - it should to go directly to an A record.

        Most MTA's these days can cope with that, it's possible that the one that Rony is using can't, hence the bounce.

        Fix: change the MX from mail.jwz.org to cerebrum.dnalounge.com, skipping the CNAME in the middle.