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HELP!!!! Exchange 2010 Receive Connector

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HELP!!!! Exchange 2010 Receive Connector - 13.Mar.2012 10:29:10 PM

darthfaded

Posts: 4
Joined: 13.Mar.2012
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Ok so here is my situation as I have it now.... I am totally stumped and I could really use a little help.

I have deployed a new Exchange 2010 server at my office,
I am not using edge transport since I have it installed bundled with SBS 2011 so AD is running on the same box.

Confirmed my smtp connector is working.
Mail sent to exchange users from within the exchange environment work, whether locally or remotely.

I have properly forwarded my MX records with our DOMAIN and an NSlookup of the CNAME that I set up for the exchange properly points to our exchange server IP.

Sadly I have a crappy router on our network, and are using a Verizon Westell 327w, I have port forwarding setup for Terminal Services, and that works fine, I have configured port 25 to be forwarded to the exchange server behind the firewall. I also have port 443 and 80 forwarded as well, which both of those forwards seems to be working.

I have made sure to allow anonymous permissions on the receive connector, as well as all available ip addresses.

I can telnet in to the exchange server from inside the firewall, but not externally, which leads me to believe it is a Port forwarding issue from outside the firewall, but as I said, all my other forwards are working fine.

EVERYTHING works except receiving mail from outside mail servers, and I have been ripping my hair out for 2 days now trying to figure it out...

Maybe there is something specific to port 25 that is causing the issue? I even tried having the exchange server listen on another port, and change the port forwarding to divert port 25, to the alternate port on the exchange and still nothing...

ANY help is greatly appreciated... I am already way over the timeframe I anticipated for deploying this exchange....

thanks...

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RE: HELP!!!! Exchange 2010 Receive Connector - 14.Mar.2012 9:11:50 AM

de.blackman

Posts: 3542
Joined: 4.Apr.2005
From: Toronto, Canada
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Have you confirmed from your ISP that they are not blocking access to port 25?

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(in reply to darthfaded)

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RE: HELP!!!! Exchange 2010 Receive Connector - 14.Mar.2012 11:21:59 AM

darthfaded

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Joined: 13.Mar.2012
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We have Verizon Business DSL, and according to the sadly inept supposed tier 2 rep I talked to, Port 25 is NOT blocked for incoming traffic.

In the receive connector I have the permissions set to accept anonymous permissions, and the IP range is accept any email from 0.0.0.0-255.255.255.255 are there any other specific settings in the receive connector or anywhere else for that matter, that would deny access to computers outside my lan?

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RE: HELP!!!! Exchange 2010 Receive Connector - 14.Mar.2012 2:52:59 PM

de.blackman

Posts: 3542
Joined: 4.Apr.2005
From: Toronto, Canada
Status: offline

This is what I am finding strange - since you can telnet and actually get a response (regardless of whether you have attempted to send an email of not), it tells me port 25 is operational and the connector is responding internally. But then you mentioned that if you try to telnet from an outside source you cannot! So that would mean either ISP or firewall. You may want to check the port forwarding again on the firewall.

Try running through https://www.testexchangeconnectivity.com/ as it has an SMTP inbound email test.

_____________________________

Ibrahim Benna - Microsoft Exchange MVP
Forum Moderator
Navantis
@IbrahimBenna

(in reply to darthfaded)

Post #: 4

RE: HELP!!!! Exchange 2010 Receive Connector - 14.Mar.2012 3:37:10 PM

darthfaded

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Joined: 13.Mar.2012
Status: offline

Here is an odd circumstance here...

I had successful delivery of 2 emails from the USPS...

Now I am really stumped....

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RE: HELP!!!! Exchange 2010 Receive Connector - 15.Mar.2012 9:11:12 AM

adrian.pettitt

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Joined: 24.Sep.2009
From: UK
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Have you run the exchangeconnectivity test mentioned?
Additionally have you run nslookup/dig against your MX records external to your organisation?

Adrian

(in reply to darthfaded)

Post #: 6

RE: HELP!!!! Exchange 2010 Receive Connector - 15.Mar.2012 12:16:19 PM

darthfaded

Posts: 4
Joined: 13.Mar.2012
Status: offline

Exchange connectivity was good and passed.

I am wondering

I have a secondary MX entry in case my exchange goes down, to a hosted IMAP server through Godaddy.

Priority for my exchange is set to 10, GoDaddy to 20...

Any chance that would cause the problem? Because it would seem that some email is being received on my server, and some only receives on the IMAP through Godaddy.

(in reply to adrian.pettitt)

Post #: 7