[Mailman-Users] Emails Not Being Delivered to All on List
D. Alan Stewart
d.alan.stewart at mac.com
Tue Oct 31 22:50:23 CET 2006
Hey, this sounds like the same problem I posted on Oct. 26! Our list
has had the problem for five months now.
It gets worse - this list has the same problem. In looking at the
Mailman-Users archive, I see severals responses to my plea for help,
"undelivered mail, but only to some" that I never received.
Thanks for the responses, Mark Sapiro, but I never got them - this
list is broken too! I'll respond to your questions in my next posting.
On Oct 31, 2006, at 4:23 PM, Bruce E. Breeding wrote:
> Symptom: some list recipients are not receiving their emails from
> the list [Four resulting questions below]
> In attempting to determine WHY the above symptom is occurring, I
> contacted my web service provider. We're getting to know each
> other well due to frequency of communication. ;)
> He seems to be trying hard to help me out.
> Here is his latest helpful hint:
> **** Web service provider's suggestions start here ...
> "I happened to catch some of your mailing lists trying to deliver a
> little while ago and caught an example of why you sometimes have
> problems. This is a good example of a list doing a partial delivery
> because it stalls at a bad address which causes delays etc for
> other addresses that are on the same list and this particular
> address you have on for lists currently unable to finish
> Getting MX record for <domainname>.org (from local DNS server, may
> be cached)... Received a SERVER FAILURE response.
> This should be treated as an ERROR (per RFC974), and the E-mail
> delivery should PROBABLY be retried later.
> Here is what has been delivered so far, anything with a "Y" has
> been delivered, anything without is stalled because of the bad
> email address which doesn't allow the mailserver to continue.
> <and here, he inserted a list of email addresses from the list,
> each prefaced with either
> YY, YN, NY, or NN>
> <I presume he's getting this from (hopefully appropriate) log.>
> <He even suggested I check email addresses at http://
> www.dnsreport.com (which I have, although I had already checked one
> by one to be sure the addresses were correctly entered. I have
> most of them in a contact list and so there was little doubt in my
> mind of their accuracy.)>
> **** Web service provider's suggestions end here ...
> So, my Question(1): Is it normal to expect a substantial amount of
> non-delivery to valid email addresses? I would presume, "No."
> But, in case I'm really missing the obvious, here, please enlighten
> Question (2): Is it normal for Mailman to "stall", or "stop"
> processing the rest of a list because of one bad email? (I'm
> asking that somewhat rhetorically, expecting an emphatic "NO" answer.)
> Question (3): Please explain the YY, YN, NY, and NN indicators
> [preceding the email addresses] from the above referenced log. I
> understand that YY means the email was delivered to the recipient,
> and NN means the email was NOT delivered to the recipient. But, YN
> and NY? maybe yes, maybe no?
> Question (4): Do you have further suggestions as to
> troubleshooting the reason that some of these addresses did not
> receive the email? Are there specific places (other logs in
> mailman) I should ask him to look that could give further information?
> Thank you for you help.
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