Mailbox unavailable. The server response was: 5.7.1 Unable to relay

I have tried to send a mail from my ASP.Net web application, But I Receive
"Mailbox unavailable. The server response was: 5.7.1 Unable to relay"
error in my log file, I have made the following change in SMTP Virtual server in IIS 6 Manager in the server
1.Added 127.0.0.1 and IP of server in Smtp Virtual Server->Properties->Access tab->Relay
under only the list below
2.Checked anonymous access in Smtp Virtual Server->Properties->Access tab->authentication
3.Changed IP address to All unassigned and also to IP of server in General tab
But no luck till now. Looking forward for your valuable reply. Thanks in Advance

Hi,
For this issue, i think you should ask in:
http://forums.asp.net/default.aspx/7?General+ASP+NET
Regards.
Vivian Wang

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The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 1 (2013-04-30T16:36:52). Exception Message: Cannot send mails to mail server. (Mailbox unavailable. The server response was: 5.7.1 Client does not

Interesting db mail issue. If i click send test mail from sql mgmt studio, it works fine, but when i execute a SP to send a mail, it fails. One thing I noticed is that the "LastModified" column in the mail log shows the domain account when a test
mail was sent from mgmt studio, but show "sa" when the SP was used to send mail.
This is from SQL 2012, did not see this in sql 2008, looks like 2008 always used the service account. any ideas ?
Get this error:
The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 1 (2013-04-30T16:36:52). Exception Message: Cannot send mails to mail server. (Mailbox unavailable. The server response was: 5.7.1 Client does not
Thanks.
Ranga

Hi Ranga,
I also use SQL Server 2012. I send a test email through SQL Server Management and the last modified By “sa”.
If you used stored procedure to send a test email. Please use the command below:
EXEC msdb.dbo.sp_send_dbmail
@profile_name = 'Adventure Works Administrator',
@recipients = '[email protected]',
@body = 'The stored procedure finished successfully.',
@subject = 'Automated Success Message' ;
I can both send test email through SQL Server Management Studio and SP. Make sure you have the right profile. Since you could send test mail via SQL Server Management Studio, please try again to send it via SP.
Thanks.
If you have any feedback on our support, please click
here.
Maggie Luo
TechNet Community Support

Delivery fails: "The server response was: 4.7.0 Temporary server error. Please try again later. PRX3"

Trying to setup an Exchange 2013 server, with the DC and Exchange on same machine. WHen I try to deliver for either of the 2 mailboxes I have setup, I get this error.
The server returned status code 451 - Error in processing. The server response was: 4.7.0 Temporary server error. Please try again later. PRX3
It doesn't seem to be a resource issue (I'm running an XL instance on Azure), and all other connectivity works fine (and fast). I just can't receive email there.
Looking in the event logs, I saw one issue related to the Front End HTTP proxy, but I wouldn't assume that's relevant here. (And connectivity via Outlook & OWA seem to be fine, with the exception
of some redirect issues on the latter).
I did end up installing Exchange on a secondary drive for space considerations, so the location is different... not sure if that would factor in either.
Any ideas? I don't even really know where to start debugging this. I'm trying to set this up to work on some event sync/forwarding code.

Ok, I think I solved my problem but figured I would update here for others who may be running into the same issue.
In my \Exchange\TransportRoles\Logs\FrontEnd\ProtocolLog\SmtpReceive\*.LOG, I found more detailed information on the issue.
"Message or connection acked with status Retry and response
451 4.4.0 Error encountered while communicating with primary target IP address: ""421 4.2.1 Unable to connect.""
Attempted failover to alternate host, but that did not succeed. Either there are no alternate hosts, or delivery failed to all alternate hosts. The last endpoint attempted was 10.10.10.1:2525"
I thought creating an endpoint for 25 would be sufficient, but once I created another endpoint for 2525 then my tests started working.

The server response was: 4.7.0 Temporary server error. Please try again later. PRX3

Hello,
I just setup an exchange 2013 server with hosted with the same machine of Active Domain Controller.
I tested the connectivity of the server , i found that the mailbox can only send email to external mailbox however it cant receive any mail neither from external mail nor internal mail.
I ran a test from exchange connectivity analyzer for inbound mail and it failed with the following message.
The server returned status code 451 - Error in processing. The server response was: 4.7.0 Temporary server error. Please try again later. PRX3
I did a search on this forum and found the following thread
social.technet.microsoft.com/Forums/exchange/en-US/288e1619-ce56-4c3a-8bb1-4886835520fe/delivery-fails-the-server-response-was-470-temporary-server-error-please-try-again-later?forum=exchangesvrdeploy
but no luck , i dont know how to set an alternative host, would somebody please help.
error details:
Message: Error in processing. The server response was: 4.7.0 Temporary server error. Please try again later. PRX3
Type: System.Net.Mail.SmtpException
Stack trace:
at System.Net.Mail.DataStopCommand.CheckResponse(SmtpStatusCode statusCode, String serverResponse)
at System.Net.Mail.DataStopCommand.Send(SmtpConnection conn)
at System.Net.Mail.SmtpClient.Send(MailMessage message)
at Microsoft.Exchange.Tools.ExRca.Tests.SmtpMessageTest.PerformTestReally()
The server returned status code 451 - Error in processing. The server response was: 4.7.0 Temporary server error. Please try again later. PRX3
Exception details:
Message: Error in processing. The server response was: 4.7.0 Temporary server error. Please try again later. PRX3
Type: System.Net.Mail.SmtpException
Stack trace:
at System.Net.Mail.DataStopCommand.CheckResponse(SmtpStatusCode statusCode, String serverResponse)
at System.Net.Mail.DataStopCommand.Send(SmtpConnection conn)
at System.Net.Mail.SmtpClient.Send(MailMessage message)
at Microsoft.Exchange.Tools.ExRca.Tests.SmtpMessageTest.PerformTestReally()
Elapsed Time: 3107 ms.
The server returned status code 451 - Error in processing. The server response was: 4.7.0 Temporary server error. Please try again later. PRX3
Exception details:
Message: Error in processing. The server response was: 4.7.0 Temporary server error. Please try again later. PRX3
Type: System.Net.Mail.SmtpException
Stack trace:
at System.Net.Mail.DataStopCommand.CheckResponse(SmtpStatusCode statusCode, String serverResponse)
at System.Net.Mail.DataStopCommand.Send(SmtpConnection conn)
at System.Net.Mail.SmtpClient.Send(MailMessage message)
at Microsoft.Exchange.Tools.ExRca.Tests.SmtpMessageTest.PerformTestReally()
Elapsed Time: 3107 ms.

Thanks god, finally i found the solution :) , i can go to sleep
i added my ad domain name to the host table then all the problems are solved!!!
source
http://www.techieshelp.com/exchange-2013-451-4-7-0-temporary-server-error-please-try-again-later-prx5/

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required.

try
MailMessage mail = new MailMessage();
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
mail.From = new MailAddress("[email protected]");
mail.To.Add("[email protected]");
mail.Subject = "Test Mail..!!!!";
mail.Body = "mail with attachment";
System.Net.Mail.Attachment attachment;
attachment = new System.Net.Mail.Attachment(@"C:\Attachment.txt");
mail.Attachments.Add(attachment);
SmtpServer.Port = 587;
SmtpServer.UseDefaultCredentials = true;
SmtpServer.Credentials = new System.Net.NetworkCredential("userid", "Password");
SmtpServer.EnableSsl = true;
SmtpServer.Send(mail);
Catch(Exception exception)
When i m run this part of code it throw an Ecxeption
Given Below is the Error..
The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required.
Bikky Kumar

try
MailMessage mail = new MailMessage();
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
mail.From = new MailAddress("[email protected]");
mail.To.Add("[email protected]");
mail.Subject = "Test Mail..!!!!";
mail.Body = "mail with attachment";
System.Net.Mail.Attachment attachment;
attachment = new System.Net.Mail.Attachment(@"C:\Attachment.txt");
mail.Attachments.Add(attachment);
SmtpServer.Port = 587;
SmtpServer.UseDefaultCredentials = true; ///Set it to false, or remove this line
SmtpServer.Credentials = new System.Net.NetworkCredential("userid", "Password");
SmtpServer.EnableSsl = true;
SmtpServer.Send(mail);
Catch(Exception exception)
Given Below is the Error.. The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required.
Solution:
The error might occur due to following cases.
case 1: when the password is wrong
case 2: when you try to login from some App
case 3: when you try to login from the domain other than your time zone/domain/computer (This
is the case in most of scenarios when sending mail from code)
There is a solution for each
solution for case 1: Enter the correct password.
Recomended: solution for case 2: go to
security settings at the following link https://www.google.com/settings/security/lesssecureapps and
enable less secure apps . So that you will be able to login from all apps.
solution 1 for case 3: (This might be helpful) you need to review the activity. but reviewing the activity will not be helpful due to latest security
standards the link will not be useful. So try the below case.
solution 2 for case 3: If you have hosted your code somewhere on production server and if you have access to the production server, than take remote
desktop connection to the production server and try to login once from the browser of the production server. This will add exception for login to google and you will be allowed to login from code.
But what if you don't have access to the production server. try
the solution 3
solution 3 for case 3: You have to enable
login from other timezone / ip for your google account.
to do this follow the link https://g.co/allowaccess and
allow access by clicking the continue button.
And that's it. Here you go. Now you will be able to login from any of the computer and by any means of app to your google account.
Regards,
Nabeel Arif

Can't send emails. The server response was: 1060208403.

Nobody in my office can send emails today. All eight of us can access the Internet and send emails normally on our computers.
When attempting to send a message I get the following error message:
Cannot send message using the server mail.ourserver.org
The server response was: 1060208403
We are using Port 26 to send email.
Our web/email host did not find any issue with the mail server or with our account. They suggested it's a problem with our mail client.
Any ideas?

It would appear somebody needs to connect into your network and/or your client system(s), and to dig around.
So there are presently eight separate systems have eight separate cases of the same problem, and your email vendor says it is a client issue?
Ok; that would not be my first guess here.
An initial suspicion would involve hardware common to all of the client systems. At your network, wireless, router(s) or switch(es) and/or at your firewall. At the connection with your network and the rest of the Internet.
And a look at the email vendor and the vendor's server(s), since the vendor is also common to all eight clients here.
Has anyone been working with your DNS, firewall or other such? (I'm going to assume not, but it is worth a mention.)
Use of port 26 is odd. I'd expect port 25 or port 587. Can you confirm that port? Port 25 is comparatively unusual for sending email of late; many entities now use 587.
Are you running a local email server? If so, that could be having an issue. I'd expect to see a local SMTP email server connect to the next SMTP server via port 25 or potentially via 587.
Can the clients make connections to other networks and servers; are other web servers and sites accessible? If so, that tends to rule out the common pieces of hardware; hunks such as the firewall and the Internet connection.
There's no obvious translation of that specified error code; that's not an SMTP error, nor is it visible anywhere on the 'net. It may well be something from the client, or something from the network somewhere.
Here is Thunderbird troubleshooting information, which might give you some ideas of where to look here (even though you're probably using Mail.app):
http://kb.mozillazine.org/Cannotsendmail
If you have an email server running locally, the spectrum of potential problems becomes rather larger.

The server response was: 4.4.1?!?

Hi!
I am having a problem with Mail 1.3.11 in OS X 10.3.9.
I can send and receive e-mails, but when I try to send a e-mail with a attachment [doesn't matter size or kind of file], it doesn't go.
After a while I get this message:
Sending the message content to the server failed.
The server response was: 4.4.1 collect: read timeout on connection from
[my ip xx.xxx.xxx.xx], from=<[email protected]>
You can try to send using a different server. All messages will use this
server until you quit or change your network settings.
My ISP says that in their side everything is ok.
How can I fix this. Can you help me?!?
Thank you,
Paulo

Is your ISP's SMTP server authenticated for your ISP's email account?
How are you connected to the internet - via an Ethernet connection to a modem or thru a wired or wireless router connected to same?
This sounds like it may be an MTU (Maximum Transmission Unit) problem. The default MTU setting for OS X with an Ethernet connection is 1500 which is the highest available. If your ISP requires a lower MTU setting, this will prevent sending messages with attachments or messages over a certain size.

Server Response: 550 5.7.1 Unable to relay

SBS 2011 I have exchange 2010,
Internally Outlook send/ Receive working fine-- Local Ip address.
Owa Send/Receive working fine.
But remote user can receive the Emails, But cant send the emails.
Subject 'tes'
Server Error: 550
Server Response: 550 5.7.1 Unable to relay
Server: 'xxx.xxx.xxx.xxx'---- Public IP address
Windows Live Mail Error ID: 0x800CCC79
Protocol: SMTP
Port: 25
Secure(SSL): Yes
How to fix this issue ?

Hi,
Did you create a relay connector to allow to relay in Exchange? About how to create a relay connector, you can refer to the following article.
How to Configure a Relay Connector for Exchange Server 2010
http://exchangeserverpro.com/how-to-configure-a-relay-connector-for-exchange-server-2010/
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make
sure that you completely understand the risk before retrieving any suggestions from the above link.
To allow a device to use Exchange to relay a message to an outside recipient, you also need the ms-Exch-SMTP-Accept-Any-Recipient attribute.
Get-ReceiveConnector -Identity relayconnector | Add-ADPermission -User "NT AUTHORITY\ANONYMOUS LOGON" -ExtendedRights "ms-Exch-SMTP-Accept-Any-Recipient"
Best regards,
Belinda
Belinda Ma
TechNet Community Support

Why can't I send emails from my Macbook Pro. A window pops up saying this: Sending the message content to the server failed. The server response was: An error occurred while sending this message using the SMTP server "(null)"

This is starting to REALLY frustrate me! I used to be able to send emails with attachments perfectly fine with my email, and now all of a sudden it won't work. I work from home, and 8/10 my emails need to have images in them. SOMEONE PLEASE HELP ME!

Contact your internet service provider. They can run some tests to verify the cause of the problem. This sounds very much like an ISP issue.

HT6030 Up to now, I have been able to check what is still sitting in my Sympatico mailbox on the server by selecting any email and hitting command-i to get info. All I get In Mavericks is a burp. Is there a way to do this that I don't know about?

Up to now, I have been able to check what is still sitting in my Sympatico mailbox on the server by selecting any email and hitting command-i to get info. All I get In Mavericks is a burp. Is there a way to do this that I don't know about?

1. You did not get an error message telling you that your iPhoto library was getting full. You got a message telling you that your HD was getting full, right?
OS X needs about 10 gigs of hard drive space for normal OS operations - things like virtual memory, temporary files and so on.
Without this space your Mac will slow down as the OS hunts for space on the disk, files will be fragmented, also slowing things down, apps will crash and the risk of data corruption - that is damage to your files, photos, music - increases exponentially.
Your first priority is to make more space on that HD. Nothing else can be done until you do.
Purchase an external HD and move your Photos and Music to it. Both iPhoto and iTunes can run perfectly well with the Library on an external disk.
Your Library has been damaged from being run on an overfull disk.
How much free space on it now?

Remote server response was not rfc conformant

Hii folks, I have an issue with Exchange 2010 outbound mails.
Mails of some domains stuck in the queue with error "remote server response was not rfc conformant"
Appreciate your responds.

Hi,
According to your description, This issue is related to one of your clients. And I’d like to confirm if emails from the problematic user are stuck in the queue and other emails are delivered successfully.
If yes, I’d like to also confirm the version of the problematic user. Is it Exchange account? External user or internal user? Does it belong to a distribution group?
Additionally, I recommend to check the SMTP protocol log:
Understanding Protocol Logging:
http://technet.microsoft.com/en-us/library/aa997624(v=exchg.141).aspx
Configure Protocol Logging:
http://technet.microsoft.com/en-us/library/bb124531(v=exchg.141).aspx
Thanks,
Angela Shi
TechNet Community Support

An AIM service error occurred. The server message was: Serv:

An AIM service error occurred. The server message was: Serv:RequestTimeout
What do I do,
I try to msg some people and this is what I get, I opened some ports, I still get the message though!
Anyone else?

Hi Dan,
I've used iChat in the recent past with no problems. Nothing had changed in my environment and I confirmed that with my ISP. Just recently I've been getting the AIM problem were it say no response for 10sec and then the session ends. Was using a cannon camera when the problem started so I bought an iSight and am still having the same issue.
I use it to talk to my son and his wife. We both use Comcast cable, we both have new iMac's.

Every time I try to sign on it says that ichat lost the connection to the AIM account and the server connection was unexpectedly lost. How can I fix this?

Every time I try to sign on it says that ichat lost the connection to the AIM account and the server connection was unexpectedly lost. How can I fix this?

Note For others.
For the Port Changes (or server names in some cases) you have to be logged out to make changes on the Server Settings pane.
9:41 PM Friday; October 28, 2011
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb( 10.6.8)
 Mac OS X (10.6.8),
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Unable to connect to the analysis server the server name was not found

Hi,
One of the user is trying to run reports from PWA 2010 and gets the below error.
Unable to connect to the analysis server the server name was not found.Please verify the name you entered is correct and then try again.
Errors in the ole db provider.An error occurred while loading the connection dialog boxcomponent for prompting.
Please advice why?

Dear Project Help,
Please help the community with more information.
Which kind of reports are you running? Excel using OLAP?
If so, check out on your Excel sheet connection information to see if it's using the SSS Authentication mode:
I'm asking this because if the failure happens with a single user, the authentication method is wrong and you should set up Secure Store Service properly.
Let me know if you need any help on this.
Cheers

CCA Error: "the server response could not be parsed [12152]"

Hi,
Has anyone gotten this error message on Cisco Clean Access Agen CCA Agent "the server response could not be parsed [12152]". I have tried everything I can but can't get rid of the error. I am running CCA 4.0.5 in OOB+VG, cluster mode for both CAM & CAS.

Syed,
If you are still there, can we pick up from where we left?
http://forums.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Expert%20Archive&topic=Security&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.1ddf45d4/8#selected_message

Mailbox unavailable. The server response was: 5.7.1 Unable to relay

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