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MS Exchange not receiving external mail

Hi All,

I am currently attempting to resolve a critical issue with our exchange mail server, we can receive internal mail fine (between mailboxes attached to the server) and we can send email fine, however we cannot receieve any mail from external source. This issue did occur once in the past and was due to lack storage space the server hard drive and mailstore. I have checked these drives and available space is as follows: c:\ = 2.8GB of 50GB and Mailstore:\= 24.8GB of 80GB. I have also restarted all MS exchange services including, RP, Information store, Server host etc..... and all services appear to be running OK.

Any and all suggestion/ tipd on how to address the above issue would be greatly apprecaite as I frantically attempting to isolate and rectify this issue as soon as possible.

Thanks again
 
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Adma1
Asked:
Adma1
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1 Solution
 
AegilCommented:
I would check the following:

SMTP port on your exchange server. telnet to port 25 and make sure its responding.

Then test you can telnet to your exchange server externally on port 25.

Then check your domain name ( has it expired / been suspended? )

Check the mx records are still correct ( they have an A record and that A record points to your ip address)

Does your site IP address match the MX record
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Kamalasekar ParthasarathyExchange SpecialistCommented:
Kindly check your send and receive connector in exchange. It has been configured properly for internet connector or not.
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Adma1Author Commented:
Hi sekar,
Can you please provide a little more detail on this and vwhat i should be looking for. I should advise thst the mail server has been working fine and this problem only recently developed.

Thanks again
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Kamalasekar ParthasarathyExchange SpecialistCommented:
Hi..

Please perform the external mailflow test by using below link.

https://www.testexchangeconnectivity.com/

If you faced any error message. request to post the same
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Adma1Author Commented:
OK I performed the active sync test against my exchange server and all appears OK see results below.

 ExRCA is testing Exchange ActiveSync.  
  Exchange ActiveSync was tested successfully.
   Test Steps
   Attempting to resolve the host name mail.companyabc.com.au in DNS.
  The host name resolved successfully.
   Additional Details
  IP addresses returned: 115.70.xxx.xxx
 
 Testing TCP port 443 on host mail.companyabc.com.au to ensure it's listening and open.
  The port was opened successfully.
 Testing the SSL certificate to make sure it's valid.
  The certificate passed all validation requirements.
   Test Steps
   ExRCA is attempting to obtain the SSL certificate from remote server mail.companyabc.com.au on port 443.
  ExRCA successfully obtained the remote SSL certificate.
   Additional Details
  Remote Certificate Subject: CN=mail.companyabc.com.au, OU=Domain Control Validated, O=mail.companyabc.com.au, Issuer: SERIALNUMBER=07969287, CN=Go Daddy Secure Certification Authority, OU=http://certificates.godaddy.com/repository, O="GoDaddy.com, Inc.", L=Scottsdale, S=Arizona, C=US.
 
 Validating the certificate name.
  The certificate name was validated successfully.
   Additional Details
  Host name mail.companyabc.com.au was found in the Certificate Subject Common name.
 
 Testing the certificate date to confirm the certificate is valid.
  Date validation passed. The certificate hasn't expired.
   Additional Details
  The certificate is valid. NotBefore = 1/26/2011 5:25:13 AM, NotAfter = 1/26/2014 5:25:13 AM
 
 
 
 Checking the IIS configuration for client certificate authentication.
  Client certificate authentication wasn't detected.
   Additional Details
  Accept/Require Client Certificates isn't configured.
 
 Testing HTTP Authentication Methods for URL https://mail.companyabc.com.au/Microsoft-Server-ActiveSync/.
  The HTTP authentication methods are correct.
   Additional Details
  ExRCA found all expected authentication methods and no disallowed methods. Methods found: Basic
 
 An ActiveSync session is being attempted with the server.
  Testing of an Exchange ActiveSync session completed successfully.
   Test Steps
   Attempting to send the OPTIONS command to the server.
  The OPTIONS response was successfully received and is valid.
   Additional Details
  Headers received: Allow: OPTIONS,POST
MS-Server-ActiveSync: 14.0
MS-ASProtocolVersions: 2.0,2.1,2.5,12.0,12.1,14.0
MS-ASProtocolCommands: Sync,SendMail,SmartForward,SmartReply,GetAttachment,GetHierarchy,CreateCollection,DeleteCollection,MoveCollection,FolderSync,FolderCreate,FolderDelete,FolderUpdate,MoveItems,GetItemEstimate,MeetingResponse,Search,Settings,Ping,ItemOperations,Provision,ResolveRecipients,ValidateCert
Public: OPTIONS,POST
Content-Length: 0
Cache-Control: private
Date: Mon, 31 Oct 2011 12:18:44 GMT
Server: Microsoft-IIS/7.5
X-AspNet-Version: 2.0.50727
X-Powered-By: ASP.NET

 
 
 Attempting the FolderSync command on the Exchange ActiveSync session.
  The FolderSync command completed successfully.
   Additional Details
  Number of folders: 44
 
 Attempting the initial sync to the Inbox folder. This initial sync won't return any data.
  The Sync command completed successfully.
   Additional Details
  Status: 1
 
 Attempting to test the GetItemEstimate command for the Inbox folder.
  ExRCA successfully received the GetItemEstimate response from the server.
   Additional Details
  Estimate: 1094 messages
 
 Attempting to test synchronization of the Inbox folder.
  The Sync command completed successfully.
   Additional Details
 
 
 
 
 
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Adma1Author Commented:
Ok after performing the internet email test it appears as though the issue is directly related to insufficient storage space available. see below.



Additional Details
  MX Records Host mail.companyabc.com.au, Preference 10
 
 
 Testing Mail Exchanger mail.companyabc.com.au.
  One or more SMTP tests failed for this Mail Exchanger.
   Test Steps
   Attempting to resolve the host name mail.companyabc.com.au in DNS.
  The host name resolved successfully.
   Additional Details
  IP addresses returned: 115.70.xxx.xxx
 
 Testing TCP port 25 on host mail.companyabc.com.au to ensure it's listening and open.
  The port was opened successfully.
   Additional Details
  Banner received: 220 MAIL-SERVER.companyabc.local Microsoft ESMTP MAIL Service ready at Mon, 31 Oct 2011 23:41:26 +1100
 
 Attempting to send a test e-mail message to test@companyabc.com.au using MX mail.companyabc.com.au.
  Delivery of the test message failed.
   Additional Details
  The server returned status code 452 - Insufficient system storage. The server response was: 4.3.1 Insufficient system resources
Exception details:
Message: Insufficient system storage. The server response was: 4.3.1 Insufficient system resources
Type: System.Net.Mail.SmtpException
Stack trace:
at System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response)
at System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, String from)
at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, SmtpFailedRecipientException& exception)
at System.Net.Mail.SmtpClient.Send(MailMessage message)
at Microsoft.Exchange.Tools.ExRca.Tests.SmtpMessageTest.PerformTestReally()
 
 
 
 
 
 
 

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Adma1Author Commented:
Excellent recommendation which assisted with identifying the issues with the mail server, thanks very much.
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