"Kev" <K**@discussions.microsoft.com> wrote in message
news:40728D54-831F-4789-BA06-0508A350D284@microsoft.com...
>I host an Exchange Server for my small company from my home.
>
> I have an FQDN of www.kmnr1.com.  I have created all the Mail records
> necessary: A, MX on my hoster.
> Mail worked fine up until about a week ago.  My ISP changed My IP on me.
> I
> have reconfigured the PIX Firewall to allow for the new address.
>
> I can send mail out just fine.
> When I attempt to send mail to myself (ke***@kmnr1.com), I am getting the
> following error:
> "Permanent Failure:550_5.7.1 No such recipient".
> I am not sure what is wrong. I have been out and checked the MX records
> and
> they seem OK...
>
> Thanks for any input.

"John Oliver, Jr. [MVP]" wrote:

> Possible your ISP is blocking port 25.  For most residential accounts ISP's
> will block SMTP.  Can you confirm you can telnet to Port 25 of your Exchange
> Server on the new IP?  Do you have a residential or business account from
> your home?
>
> --
> John Oliver, Jr
> MCSE, MCT, CCNA
> Exchange MVP 2008
> Microsoft Certified Partner
>
>
> "Kev" <K**@discussions.microsoft.com> wrote in message
> news:40728D54-831F-4789-BA06-0508A350D284@microsoft.com...
> >I host an Exchange Server for my small company from my home.
> >
> > I have an FQDN of www.kmnr1.com.  I have created all the Mail records
> > necessary: A, MX on my hoster.
> > Mail worked fine up until about a week ago.  My ISP changed My IP on me.
> > I
> > have reconfigured the PIX Firewall to allow for the new address.
> >
> > I can send mail out just fine.
> > When I attempt to send mail to myself (ke***@kmnr1.com), I am getting the
> > following error:
> > "Permanent Failure:550_5.7.1 No such recipient".
> > I am not sure what is wrong. I have been out and checked the MX records
> > and
> > they seem OK...
> >
> > Thanks for any input.
>

"Kev" <K**@discussions.microsoft.com> wrote in message
news:1AC4953C-3184-4EAE-810C-91B873545A28@microsoft.com...
> Perhaps they have started blocking it... could have happened at the same
> time
> last week when the new DHCP address was leased... I had to change
> everything
> on the firewall then...
>
> I did successfully telnet to 25 and run commands from remote...
>
> I wonder if I am blacklisted... One of the services indicated that I was.
> I
> am not sure what to do next...
>
> Kevin
>
> "John Oliver, Jr. [MVP]" wrote:
>
>> Possible your ISP is blocking port 25.  For most residential accounts
>> ISP's
>> will block SMTP.  Can you confirm you can telnet to Port 25 of your
>> Exchange
>> Server on the new IP?  Do you have a residential or business account from
>> your home?
>>
>> --
>> John Oliver, Jr
>> MCSE, MCT, CCNA
>> Exchange MVP 2008
>> Microsoft Certified Partner
>>
>>
>> "Kev" <K**@discussions.microsoft.com> wrote in message
>> news:40728D54-831F-4789-BA06-0508A350D284@microsoft.com...
>> >I host an Exchange Server for my small company from my home.
>> >
>> > I have an FQDN of www.kmnr1.com.  I have created all the Mail records
>> > necessary: A, MX on my hoster.
>> > Mail worked fine up until about a week ago.  My ISP changed My IP on
>> > me.
>> > I
>> > have reconfigured the PIX Firewall to allow for the new address.
>> >
>> > I can send mail out just fine.
>> > When I attempt to send mail to myself (ke***@kmnr1.com), I am getting
>> > the
>> > following error:
>> > "Permanent Failure:550_5.7.1 No such recipient".
>> > I am not sure what is wrong. I have been out and checked the MX records
>> > and
>> > they seem OK...
>> >
>> > Thanks for any input.
>>