netjoe
asked on
URGENT
I am having issue with my mail server I am relatively new to Exchange here's what I found so far.
Connections from the Internet to the box on port 25 work. Port 110
incoming is and has always been closed. To get emails from outside you
will need to use http/https. From inside, we have no control on your
access to the server, but the server is responding to port 25. It is
NOT responding to port 110 (POP3), so there is a problem on the server
itself.
Another issue we see in the logs is the following:
May 26 09:20:06 parkerhdtxus1 qmail: 1211811606.829614
parkerhdtxus1-1211667205.2
205.188.159.216_failed_aft
:__(DNS:NR)__http://postmaster.info.aol.com/errors/421dnsnr.html/421_SE
RVICE_NOT_AVAILABLE/
Your MX record is not properly and completely set up, so AOL is
rejecting your emails.
Connections from the Internet to the box on port 25 work. Port 110
incoming is and has always been closed. To get emails from outside you
will need to use http/https. From inside, we have no control on your
access to the server, but the server is responding to port 25. It is
NOT responding to port 110 (POP3), so there is a problem on the server
itself.
Another issue we see in the logs is the following:
May 26 09:20:06 parkerhdtxus1 qmail: 1211811606.829614
parkerhdtxus1-1211667205.2
205.188.159.216_failed_aft
:__(DNS:NR)__http://postmaster.info.aol.com/errors/421dnsnr.html/421_SE
RVICE_NOT_AVAILABLE/
Your MX record is not properly and completely set up, so AOL is
rejecting your emails.
Having SPF and DOmainKeys set up would also help, particularly when relaying email to Yahoo and AOL.
ASKER
As far as I can tell all of the above is done. I cannot get POP3 service to start I get that the procees terminated unexpectedly.
Tanks,
Joe
Tanks,
Joe
Hi Joe,
Nothing more than that in event viewer?
It has to be enabled in Administrative Tools / Services as well as Exchange System Manager (Protocols), but I guess you've done both now?
Chris
ASKER
Chris,
Thanks for your help but if I were to reinstalled exchange what files or folders would I have to save to not loose as much user information as possible.
Joe
Thanks for your help but if I were to reinstalled exchange what files or folders would I have to save to not loose as much user information as possible.
Joe
ASKER CERTIFIED SOLUTION
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Hi there,
Port 110 first. POP3 is disabled by default, unless you've explicitly enabled POP3 it won't be listening. You can see what ports are listening on the server by running "netstat -an". You're probably better just checking the service state in Services as well as the Protocol folder in Exchange System Manager.
The Reverse DNS error quoted above is a very common one. It's there to stop spam from thousands of "casual" relays.
In order to send mail successfully you need:
1. A full public Name for your Mail Server, to be configured in the Virtual SMTP Server Properties (Properties, Delivery, Advanced if I remember correctly). e.g. FQDN for SMTP Server: mail.yourcompany.com
2. A PTR Record (Pointer, Reverse Lookup Record) for your Server pointing the Public IP you use back to the Public Name used by the SMTP Server. e.g. PTR Record 123.234.123.234.in-addr.ar
This record is normally added for you by your ISP. Provided they allow them they'll be quite happy if you tell them you want a PTR Record for 234.123.234.123 to mail.yourcompany.com (replace with your IP and mail server name, of course).
3. And just to keep things neat. A Forward Lookup Record. e.g. mail.yourcompany Host (A) 234.123.234.123
If mail is sent into your server directly it will probably already have the Host (A) Record as part of the MX Record. That means you simply need to fix 1 and 2 (if they're not already).
HTH
Chris