No mail flow

I'm in the midst of changing ISPs. I run my own mail server at home
(Exchange 2003) and yesterday I attempted to move to the new ISP. After
reconfiguring for the new ISP I was receiving mail but I was unable to send.
After two hours of attempting to fix I decided to go back to the original
setup (original ISP) temporarily until I could troubleshoot more. Now I have
no mail flow in either direction.

I can telnet to my mail server on port 25 from the Internet and locally. I
can access OWA from the Internet. From my mail client (OE) I can send mail
to myself but it never comes back to me when I receive. If I send mail from
GMAIL or Hotmail to my Exchange Server I get no non-delivery reports but the
emails never show up in my inbox. I am stumped and would appreciate some
help.

I run a single Windows 2003 server with Exchange 2003 on it. One of the
things I attempted to do yesterday, when changing to new ISP, is remove the
SMTP connector I had been using to relay mail through old ISP and send mail
through local SMTP on the same server. This seems to be when all the
problems started. I have since recreated the connector but still no love.

The only error I see in the event log is event ID 290, Source MSEchangeMTA,
Category X.400 Service.

Bharat
Mon Nov 05 02:29:16 PST 2007

- For inbound mail, it's a good sign you can telnet from outside on smtp
port.
- Are you using the server's fqdn? or IP address?
- Make sure name resolution (A record to IP address) works, and MX record(s)
point to the correct A record (the latter wouldn't have been touched, but
double-check)
- Though OWA, etc. work, double-check firewall NAT rules (if they're mapping
to correct external IP address)
- (Re)create SMTP Connector for address space *, use DNS or use either ISP's
SMTP hosts as smarthosts. (Contact the ISPs and get any auth credentials, if
required)
- Make sure there are no smarthosts on SMTP virtual servers

--
Bharat Suneja
MVP - Exchange
www.zenprise.com
NEW blog location:
exchangepedia.com/blog
----------------------------------------------


"Jeff" <topnikko@hotmail.com.discuss> wrote in message
news:%23IR2YIvHIHA.484@TK2MSFTNGP06.phx.gbl...
> I'm in the midst of changing ISPs. I run my own mail server at home
> (Exchange 2003) and yesterday I attempted to move to the new ISP. After
> reconfiguring for the new ISP I was receiving mail but I was unable to
> send. After two hours of attempting to fix I decided to go back to the
> original setup (original ISP) temporarily until I could troubleshoot more.
> Now I have no mail flow in either direction.
>
> I can telnet to my mail server on port 25 from the Internet and locally. I
> can access OWA from the Internet. From my mail client (OE) I can send mail
> to myself but it never comes back to me when I receive. If I send mail
> from GMAIL or Hotmail to my Exchange Server I get no non-delivery reports
> but the emails never show up in my inbox. I am stumped and would
> appreciate some help.
>
> I run a single Windows 2003 server with Exchange 2003 on it. One of the
> things I attempted to do yesterday, when changing to new ISP, is remove
> the SMTP connector I had been using to relay mail through old ISP and send
> mail through local SMTP on the same server. This seems to be when all the
> problems started. I have since recreated the connector but still no love.
>
> The only error I see in the event log is event ID 290, Source
> MSEchangeMTA, Category X.400 Service.
>
>
>
>

Jeff
Mon Nov 05 05:10:19 PST 2007

Thank you. I can't even send email to myself. What could cause that. The
email client says the emails send successfully but, when I check mail,
nothing there.


"Bharat Suneja [MVP]" <bharat@nospam.org> wrote in message
news:uEdE5a5HIHA.280@TK2MSFTNGP03.phx.gbl...
>- For inbound mail, it's a good sign you can telnet from outside on smtp
>port.
> - Are you using the server's fqdn? or IP address?
> - Make sure name resolution (A record to IP address) works, and MX
> record(s) point to the correct A record (the latter wouldn't have been
> touched, but double-check)
> - Though OWA, etc. work, double-check firewall NAT rules (if they're
> mapping to correct external IP address)
> - (Re)create SMTP Connector for address space *, use DNS or use either
> ISP's SMTP hosts as smarthosts. (Contact the ISPs and get any auth
> credentials, if required)
> - Make sure there are no smarthosts on SMTP virtual servers
>
> --
> Bharat Suneja
> MVP - Exchange
> www.zenprise.com
> NEW blog location:
> exchangepedia.com/blog
> ----------------------------------------------
>
>
> "Jeff" <topnikko@hotmail.com.discuss> wrote in message
> news:%23IR2YIvHIHA.484@TK2MSFTNGP06.phx.gbl...
>> I'm in the midst of changing ISPs. I run my own mail server at home
>> (Exchange 2003) and yesterday I attempted to move to the new ISP. After
>> reconfiguring for the new ISP I was receiving mail but I was unable to
>> send. After two hours of attempting to fix I decided to go back to the
>> original setup (original ISP) temporarily until I could troubleshoot
>> more. Now I have no mail flow in either direction.
>>
>> I can telnet to my mail server on port 25 from the Internet and locally.
>> I can access OWA from the Internet. From my mail client (OE) I can send
>> mail to myself but it never comes back to me when I receive. If I send
>> mail from GMAIL or Hotmail to my Exchange Server I get no non-delivery
>> reports but the emails never show up in my inbox. I am stumped and would
>> appreciate some help.
>>
>> I run a single Windows 2003 server with Exchange 2003 on it. One of the
>> things I attempted to do yesterday, when changing to new ISP, is remove
>> the SMTP connector I had been using to relay mail through old ISP and
>> send mail through local SMTP on the same server. This seems to be when
>> all the problems started. I have since recreated the connector but still
>> no love.
>>
>> The only error I see in the event log is event ID 290, Source
>> MSEchangeMTA, Category X.400 Service.
>>
>>
>>
>>
>
>