MagAca Posted February 6, 2015 Posted February 6, 2015 We are using exchange 2010 sp3 on server 2008 r2. We cannot get emails in with the following error being reported when using the connectivity tester from microsoft. [TABLE=class: logTable tb tbFixed, width: 1256] [TR] [TD]Testing inbound SMTP mail flow for domain '[email protected]'.[/TD] [/TR] [TR] [TD][/TD] [TD]The Microsoft Connectivity Analyzer failed to test inbound SMTP mail flow.[/TD] [/TR] [TR] [TD] [/TD] [TD][TABLE=class: tb tbFixed, width: 1234] [TR] [TD][/TD] [TD]Additional Details[/TD] [/TR] [TR] [TD] [/TD] [TD=class: addtlDetailsCell]Elapsed Time: 4988 ms.[/TD] [/TR] [/TABLE] [/TD] [/TR] [TR] [TD] [/TD] [TD][TABLE=class: tb tbFixed, width: 1234] [TR] [TD][/TD] [TD]Test Steps[/TD] [/TR] [TR] [TD] [/TD] [TD][TABLE=class: tb tbFixed, width: 1218] [TR] [TD][/TD] [TD]Attempting to retrieve DNS MX records for domain 'domain.co.uk'.[/TD] [/TR] [TR] [TD] [/TD] [TD]One or more MX records were successfully retrieved from DNS.[/TD] [/TR] [TR] [TD] [/TD] [TD][TABLE=class: tb tbFixed, width: 1190] [TR] [TD][/TD] [TD]Additional Details[/TD] [/TR] [TR] [TD] [/TD] [TD=class: addtlDetailsCell]MX Records Host mail.domain.co.uk, Preference 5 Elapsed Time: 167 ms. [/TD] [/TR] [/TABLE] [/TD] [/TR] [/TABLE] [TABLE=class: tb tbFixed, width: 1218] [TR] [TD][/TD] [TD]Testing Mail Exchanger mail.domain.co.uk.[/TD] [/TR] [TR] [TD] [/TD] [TD]One or more SMTP tests failed for this Mail Exchanger.[/TD] [/TR] [TR] [TD] [/TD] [TD][TABLE=class: tb tbFixed, width: 1190] [TR] [TD][/TD] [TD]Additional Details[/TD] [/TR] [TR] [TD] [/TD] [TD=class: addtlDetailsCell]Elapsed Time: 4821 ms.[/TD] [/TR] [/TABLE] [/TD] [/TR] [TR] [TD] [/TD] [TD][TABLE=class: tb tbFixed, width: 1190] [TR] [TD][/TD] [TD]Test Steps[/TD] [/TR] [TR] [TD] [/TD] [TD][TABLE=class: tb tbFixed, width: 1174] [TR] [TD][/TD] [TD]Attempting to resolve the host name mail.domain.co.uk in DNS.[/TD] [/TR] [TR] [TD] [/TD] [TD]The host name resolved successfully.[/TD] [/TR] [TR] [TD] [/TD] [TD][TABLE=class: tb tbFixed, width: 1146] [TR] [TD][/TD] [TD]Additional Details[/TD] [/TR] [TR] [TD] [/TD] [TD=class: addtlDetailsCell]IP addresses returned: 62.255.9.36 Elapsed Time: 1943 ms. [/TD] [/TR] [/TABLE] [/TD] [/TR] [/TABLE] [TABLE=class: tb tbFixed, width: 1174] [TR] [TD][/TD] [TD]Testing TCP port 25 on host mail.domain.co.uk to ensure it's listening and open.[/TD] [/TR] [TR] [TD] [/TD] [TD]The port was opened successfully.[/TD] [/TR] [TR] [TD] [/TD] [TD][TABLE=class: tb tbFixed, width: 1146] [TR] [TD][/TD] [TD]Additional Details[/TD] [/TR] [TR] [TD] [/TD] [TD=class: addtlDetailsCell]Banner received: 220 MAIL.domain.co.uk Microsoft ESMTP MAIL Service, Version: 7.5.7601.17514 ready at Fri, 6 Feb 2015 08:30:23 +0000 Elapsed Time: 1479 ms. [/TD] [/TR] [/TABLE] [/TD] [/TR] [/TABLE] [TABLE=class: tb tbFixed, width: 1174] [TR] [TD][/TD] [TD]Analyzing SMTP Capabilities for server mail.domain.co.uk:25[/TD] [/TR] [TR] [TD] [/TD] [TD]SMTP Capabilities were analyzed successfuly.[/TD] [/TR] [TR] [TD] [/TD] [TD][TABLE=class: tb tbFixed, width: 1146] [TR] [TD][/TD] [TD]Additional Details[/TD] [/TR] [TR] [TD] [/TD] [TD=class: addtlDetailsCell]SMTP Capabilities were analyzed successfuly. 250-MAIL.domian.co.uk Hello [157.56.138.143] 250-TURN 250-SIZE 2097152 250-ETRN 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-8bitmime 250-BINARYMIME 250-CHUNKING 250-VRFY 250-TLS 250-STARTTLS 250 OK Elapsed Time: 626 ms. [/TD] [/TR] [/TABLE] [/TD] [/TR] [/TABLE] [TABLE=class: tb tbFixed, width: 1174] [TR] [TD][/TD] [TD]Attempting to send a test email message to [email protected] using MX mail.domain.co.uk.[/TD] [/TR] [TR] [TD] [/TD] [TD]Delivery of the test email message failed.[/TD] [/TR] [TR] [TD] [/TD] [TD][TABLE=class: tb tbFixed, width: 1146] [TR] [TD][/TD] [TD]Additional Details[/TD] [/TR] [TR] [TD] [/TD] [TD=class: addtlDetailsCell]The server returned status code 550 - Mailbox unavailable. The server response was: 5.7.1 Unable to relay for [email protected] Exception details: Message: Mailbox unavailable. The server response was: 5.7.1 Unable to relay for [email protected] Type: System.Net.Mail.SmtpFailedRecipientException Stack trace: at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, Boolean allowUnicode, SmtpFailedRecipientException& exception) at System.Net.Mail.SmtpClient.Send(MailMessage message) at Microsoft.Exchange.Tools.ExRca.Tests.SmtpMessageTest.PerformTestReally() Elapsed Time: 771 ms. Internal emails are all working fine . As is sending out externally . Any ideas would be appreciated. [/TD] [/TR] [/TABLE] [/TD] [/TR] [/TABLE] [/TD] [/TR] [/TABLE] [/TD] [/TR] [/TABLE] [/TD] [/TR] [/TABLE] [/TD] [/TR] [/TABLE]
pleach85 Posted February 6, 2015 Posted February 6, 2015 I would start by looking at your Receive Connectors, have you got multiple connectors using the same IP and port? Are there any disabled ones that shouldn't be?
DavetheITguy Posted February 6, 2015 Posted February 6, 2015 Hi, MagAca. Do you use a SMTP smart host ? The academy I work at uses one, our smart host is DMBC. we are given a reverse proxy as the alias for our CNAME, when someone sends an email from an external source it looks at that cname and directs the email to DMBC who then direct it to the academy. Make sure that the CNAME you have on your domain links back to your mail server or LA either using a reverse proxy or IP address. If you go through the Local Authority check with them. What firewall do you use....Forefront TMG, Sophos, Smoothwall ?, make sure that you have a server publishing rule in your firewall to allow mail to be directed to your server. Hope this helps. David
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