On 8/9/04 12:22 PM, Stacy M. Wilhelm wrote:
> Could you say that again only in English this time? (I have NO
> technical understanding at all!)
>
> To give you some background, I'm now trying to figure out which
> addresses in my list bounced for legit reasons (and who
> unsubscribed--Heavens! Don't want to send to those people again and
> get on any more bad lists!), and who failed because of the service.
> It's turning out to be a nightmare! Come to find out, the service
> bounced many as "reaching their limit of bounces" (five) in a single
> campaign! And many of those said, "Please try again later" i.e. the
> server was down at that time.
>
> That MX message was all that it said. No MX for domain. So I was
> wondering what that meant so I could figure out if that's an address
> to keep because the service messed up or one that truly IS
> undeliverable by anyone--no matter which service I use.
Here's the (admittedly) long story:
DNS stands for 'Domain Name System', and keeps track of the mapping
between human-readable domain names (like aol.com, yahoo.com, etc.) and
it's machine-oriented counterparts (1.2.3.4, or 66.53.195.131 for
example). There are several types of 'mappings' that DNS can keep track
of. 'A' maps (aka 'records') keep track of the number-to-name mapping,
as described above. 'MX' records are for 'Mail eXchanger' information.
So, the MX record for a domain describes what machine receives mail for
that domain. When there is no MX record for a domain, that means that
the DNS system has no way to tell where to deliver mail for that
particular domain. So, no service would be able to deliver mail to
anyone at that domain.
Hope this makes things clearer.
Thanks,
Per
--
Per Reedtz Thomsen | The Reedtz Corporation | F: 209 883 4119
V: 209 883 4102 | pthomsen@reedtz.com | C: 415 425 4025
GPG ID: 1209784F | Yahoo! Chat: pthomsen | AIM: pthomsen
-------
Archives at
http://archives.listbox.com/spf-help/current/ Donate!
http://spf.pobox.com/donations.html To unsubscribe, change your address, or temporarily deactivate your subscription,
please go to
http://v2.listbox.com/member/?listname=spf-help@v2.listbox.com