Issue 22838 - Problem with DNS ans MX field
Summary: Problem with DNS ans MX field
Status: CLOSED FIXED
Alias: None
Product: Infrastructure
Classification: Infrastructure
Component: Mailing lists (show other issues)
Version: current
Hardware: All All
: P2 Trivial with 1 vote (vote)
Target Milestone: ---
Assignee: Unknown
QA Contact: issues@www
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2003-11-25 15:06 UTC by davide
Modified: 2004-08-04 20:00 UTC (History)
5 users (show)

See Also:
Issue Type: DEFECT
Latest Confirmation in: ---
Developer Difficulty: ---

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Description davide 2003-11-25 15:06:07 UTC 
Some users report the impossibility to send email to italian mailing list.
It seems because there is a problem with your DNS and the MX field.that appears
undefined.

In fact a dig command reports:


[dozza@refosco contribuire]$ dig it.openoffice.org mx
;; Got SERVFAIL reply from 127.0.0.1, trying next server

; <<>> DiG 9.2.3rc2 <<>> it.openoffice.org mx
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51317
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;it.openoffice.org.             IN      MX

;; Query time: 549 msec
;; SERVER: 192.168.1.2#53(192.168.1.2)
;; WHEN: Tue Nov 25 16:03:57 2003
;; MSG SIZE  rcvd: 35

Davide
Comment 1 pavel 2003-11-25 17:38:38 UTC 
The same was reported by users from Czech mailing lists.
Comment 2 Martin Hollmichel 2003-12-07 15:12:36 UTC 
reassigned to support
Comment 3 Martin Hollmichel 2003-12-07 15:26:30 UTC 
adjust prio.
Comment 4 Unknown 2003-12-08 05:45:31 UTC 
Filed an internal issue PCN 24570 for the engineer to look at.

Thanks,
Priya
Comment 5 Unknown 2003-12-16 06:09:08 UTC 
Engineer updated in the internal issue as follows:

"Technically, the MX field is not required; in the abscense of an MX field, the
relevant RFC requires that clients use the record which was retrieved as if it
were the only MX record.  For reference, see the section titled "Interpreting
the List of MX RRs" in RFC 974:

http://www.faqs.org/rfcs/rfc974.html"
Comment 6 stx123 2003-12-17 08:14:22 UTC 
Technically the explanation from the engineer might be correct but in practise 
the absence of the mx record results in the following problems.

Users can't send to the mailing lists.

It also means that messages from openoffice.org bounce with an error 
like "Remote host said: 501 5.1.8 Sender domain blocked (missing DNS MX 
record)."

I tend to raise the prio to P1 as the mail system is seriously affected.
Comment 7 stx123 2003-12-23 10:26:35 UTC 
seems to be fixed
Comment 8 lsuarezpotts 2003-12-23 16:11:42 UTC 
24570: resolved fixed on PCN.
louis
Comment 9 pavel 2003-12-23 16:13:45 UTC 
What was the comment from engineer?
Comment 10 lsuarezpotts 2003-12-23 16:54:43 UTC 
MX fields are not required, but the current behavior of the lists suggested adding them as the 
solution easiest to obtain, especially given the error messages.  That said, they added the MX 
records; further, Brightmail requires MX records.  As an aside, it was noted that many domains do 
not have explicit MX fields.

Sorry, had to sanitize the fun parts.

-louis
Comment 11 Unknown 2004-08-04 20:00:55 UTC 
Closing this issue.