Re: Undeliverable Mail

You have a PTR record, but it does not map to your MX record. If a
receiving mail server is doing a reverse-DNS lookup, then the PTR record
will not match the name that the server says it is and could cause the
connection to be rejected.

Do you have a static IP address, or is this a dynamic IP? If it's a dynamic
IP, then you won't have any control over this. If static, you can ask your
ISP to modify the PTR record to map back to mail.esi-extrusion.com, but
whether they do this is up to them. AOL and Yahoo usually don't accept mail
from IP's that are in dynamic pools.

Can you send outgoing mail through your ISP as a SmartHost?

--
Ben Winzenz
Exchange MVP
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"ESI" <ESI@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:AF1895BF-9FCD-4F25-9D20-6F54A6DC7AC5@xxxxxxxxxxxxxxxx
>I went to www.dnsreport.com and our reverse dns is ok. That I would assume
> handles the ptr question and A record. I typed esi-extrusion.com in the
> domain and all things look ok minus a few misc errors.
>
> "Dan J.S." wrote:
>
>>
>> "ESI" <ESI@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
>> news:3C4D5C0B-DD8D-499E-8B18-FB3A4298E0BB@xxxxxxxxxxxxxxxx
>> >I am NOT an IT Professional. I just try to do my best as our company IT
>> > person. (someone has to do it). We use Windows server 2003 for small
>> > business. We Use MS Exchange v 6.5 Build 7638.2 Service Pack 2. Our
>> > company
>> > can not send email to yahoo.com or aol.com addresses. The company that
>> > setup
>> > our server said " We don't handle your dns configuration, this is
>> > something
>> > you have to take up with Interland. However, the dns report is just
>> > flagging
>> > generic issues that will not cause you any harm and is not causing you
>> > any
>> > problems. What I believe is happening is the dns server at ESI is
>> > having
>> > an
>> > issue with dns lookups at your end. There is a tweak we can do to help
>> > it
>> > correctly work with aol and yahoo mail providers. It takes about 30
>> > minutes
>> > to implement. Is this something I can do? I do know my way around some
>> > things and am learning all I can. Can some nice soul out there shed
>> > some
>> > light on my agonies?
>> >
>>
>> I can tell you from experience, dealing with yahoo and aol (and
>> especially
>> aol) is a pain in the ass. You probably need a reverse dns record, and
>> this
>> is something both your is needs to setup (called a ptr) and you may also
>> need an a record in your dns that confirms your outgoing smtp server is
>> in
>> fact in your control. However, even after you do it, aol keeps a cache
>> for
>> weeks sometimes, so even though all is corrected, you may still have
>> issues.
>> Calling aol may help, but they are a bunch of arrogant a-holes when
>> dealing
>> with them (especially their email admins).
>>
>> good luck.
>>
>>
>>


.

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