Greetings!
First, what most consider "email" is not directly affected by public DNS
settings and MX records for our location. Our incoming mail hits our
hosted relay, goes to our NYC offices (yes, public DNS and MX records are
most definitely involved there!), and then to us via a separate WAN
connection.
This concerns an email-to-fax path we have...
Currently, the IL office is on one internet provider. It hosts DNS for
our offices (.mwro.aspca.org.). The NYC offices are one a separate
internet provider and a separate DNS host. (The NYC DNS host is the
authoritative host for .aspca.org., so it holds nameserver records for
.mwro.aspca.org. All has been well.)
We are nearly finished with the move to having both locations (NYC, IL)
though the same provider and on a single DNS host. In our first attempt,
all external services appeared to be functioning well except for the
mail-to-fax service.
Fax service is for the IL location only, and it is out-bound faxing only.
For a number of reasons (ie, we have probably dug ourselves into a deep
hole here), fax requests leave our LAN, to to an external hosted relay
(Postini), and then are sent on to the fax server (which has its own MTA).
The fax server recieves the mailed fax request, dials the number, and
sends the attached document.
Fax requests are addressed to "[fax_number]@faxcore1.mwro.aspca.org".
The current internet service provider (ISP), hosting DNS records for
.mwro.aspca.org. only, has:
=========
DNS records for mwro.aspca.org.:
Name Type Data
SOA cbru.br.ns.els-gms.att.net.
NS cbru.br.ns.els-gms.att.net.
NS cmtu.mt.ns.els-gms.att.net.
faxcore1. A 12.15.29.135
@. MX 10 faxcore1.mwro.aspca.org.
faxcore1. MX 10 faxcore1.mwro.aspca.org.
========
Again, all works with this arrangement!
My question is, are the following entries for the future ISP/DNS host
correct?
First, the nameserver records for .mwro.aspca.org have been deleted. That
is, this DNS host would then be the authority of all of ASPCA and have the
records for .mwro.aspca.org. as well as for .aspca.org.
==========
faxcore1.mwro IN A 63.85.204.151
apcc IN MX 10 napcc.aspca.org.
list IN MX 10 laser.sparklist.com.
napcc IN MX 5 mail.napcc.aspca.org.
napcc IN MX 10 napcc.aspca.org.
nso IN MX 10 nso.aspca.org.
@.mwro IN MX 10 faxcore1.mwro.aspca.org.
faxcore1.mwro IN MX 10 faxcore1.mwro.aspca.org.
==========
(Yes, firewall settings were checked multiple times. Other entries for
.mwro., not shown, functioned correctly.)
Specific questions:
1. I believe the entry "@.mwro" should be deleted, correct?
2. Is the context of the line "faxcore1.mwro.aspca.org" correct?
3. Finally, is the fact that no fax requests came into the fax server for
a two hour period most likely due to our hosted mail relay not seeing the
updated MX records at the "new" DNS location? That is, had we given the
connections, DNS settings, etc 4-8 hours, might the fax requests have
begun arriving at faxcore1.mwro.aspa.org?
We are trying to determine if the failure of the faxing was due to
improper DNS MX record entries or simply a matter of not waiting long
enough.
Thanks!
--
richard
~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
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