Question

I’ve developed my own delivery extension for Reporting Services 2005, to integrate this with our SaaS marketing solution.

It takes the subscription, and takes a snapshot of the report with a custom set of parameters. It then renders the report, sends an e-mail with a link and the report attached as XLS.

Everything works fine, until mail delivery…

Here’s my code for sending e-mail:

 public static List<string> SendMail(SubscriptionData data, Stream reportStream, string reportName, string smptServerHostname, int smtpServerPort) {   List<string> failedRecipients = new List<string>();    MailMessage emailMessage = new MailMessage(data.ReplyTo, data.To);   emailMessage.Priority = data.Priority;   emailMessage.Subject = data.Subject;   emailMessage.IsBodyHtml = false;   emailMessage.Body = data.Comment;    if (reportStream != null)   {     Attachment reportAttachment = new Attachment(reportStream, reportName);     emailMessage.Attachments.Add(reportAttachment);     reportStream.Dispose();   }    try   {     SmtpClient smtp = new SmtpClient(smptServerHostname, smtpServerPort);      // Send the MailMessage     smtp.Send(emailMessage);   }   catch (SmtpFailedRecipientsException ex)   {     // Delivery failed for the recipient. Add the e-mail address to the failedRecipients List     failedRecipients.Add(ex.FailedRecipient);   }   catch (SmtpFailedRecipientException ex)   {     // Delivery failed for the recipient. Add the e-mail address to the failedRecipients List     failedRecipients.Add(ex.FailedRecipient);   }   catch (SmtpException ex)   {     throw ex;   }   catch (Exception ex)   {     throw ex;   }    // Return the List of failed recipient e-mail addresses, so the client can maintain its list.   return failedRecipients; } 

Values for SmtpServerHostname is localhost, and port is 25.

I veryfied that I can actually send mail, by using Telnet. And it works.

Here’s the error message I get from SSRS:

ReportingServicesService!notification!4!08/28/2008-11:26:17:: Notification 6ab32b8d-296e-47a2-8d96-09e81222985c completed. Success: False, Status: Exception Message: Failure sending mail. Stacktrace: at MyDeliveryExtension.MailDelivery.SendMail(SubscriptionData data, Stream reportStream, String reportName, String smptServerHostname, Int32 smtpServerPort) in C:\inetpub\wwwroot\CustomReporting\MyDeliveryExtension\MailDelivery.cs:line 48 at MyDeliveryExtension.MyDelivery.Deliver(Notification notification) in C:\inetpub\wwwroot\CustomReporting\MyDeliveryExtension\MyDelivery.cs:line 153, DeliveryExtension: My Delivery, Report: Clicks Development, Attempt 1 ReportingServicesService!dbpolling!4!08/28/2008-11:26:17:: NotificationPolling finished processing item 6ab32b8d-296e-47a2-8d96-09e81222985c

Could this have something to do with Trust/Code Access Security?

My delivery extension is granted full trust in rssrvpolicy.config:

   <CodeGroup      class='UnionCodeGroup'     version='1'     PermissionSetName='FullTrust'     Name='MyDelivery_CodeGroup'     Description='Code group for MyDelivery extension'>     <IMembershipCondition class='UrlMembershipCondition' version='1' Url='C:\Program Files\Microsoft SQL Server\MSSQL.2\Reporting Services\ReportServer\bin\MyDeliveryExtension.dll' />    </CodeGroup>  

Could trust be an issue here?

Another theory: SQL Server and SSRS was installed in the security context of Local System. Am I right, or is this service account restricted access to any network resource? Even its own SMTP Server?

I tried changing all SQL Server Services logons to Administrator – but still without any success.

I also tried logging onto the SMTP server in my code, by proviiding: NetworkCredential(‘Administrator’, ‘password’) and also NetworkCredential(‘Administrator’, ‘password’, ‘MyRepServer’)

Can anyone help here, please?

Answer 1

What’s at:

at MyDeliveryExtension.MailDelivery.SendMail(SubscriptionData data, Stream reportStream, String reportName, String smptServerHostname, Int32 smtpServerPort)    in C:\inetpub\wwwroot\CustomReporting\MyDeliveryExtension\MailDelivery.cs:line 48   at MyDeliveryExtension.MyDelivery.Deliver(Notification notification)    in C:\inetpub\wwwroot\CustomReporting\MyDeliveryExtension\MyDelivery.cs:line 153 

Also you seem to be disposing the report stream, but that should be done by whatever opened that stream, not your method (it won’t be obvious that attaching a stream disposes it).

You’re losing part of your stack trace due to how you re-throw exceptions. Don’t throw the ex variable, just throw is enough.

Try this tweak:

public static List<string> SendMail(SubscriptionData data, Stream reportStream, string reportName, string smptServerHostname, int smtpServerPort) {   List<string> failedRecipients = new List<string>();    MailMessage emailMessage = new MailMessage(data.ReplyTo, data.To) {       Priority = data.Priority,       Subject = data.Subject,       IsBodyHtml = false,       Body = data.Comment   };    if (reportStream != null)     emailMessage.Attachments.Add(new Attachment(reportStream, reportName));    try   {       SmtpClient smtp = new SmtpClient(smptServerHostname, smtpServerPort);        // Send the MailMessage       smtp.Send(emailMessage);   }   catch (SmtpFailedRecipientsException ex)   {     // Delivery failed for the recipient. Add the e-mail address to the failedRecipients List     failedRecipients.Add(ex.FailedRecipient);      //are you missing a loop here? only one failed address will ever be returned   }   catch (SmtpFailedRecipientException ex)   {     // Delivery failed for the recipient. Add the e-mail address to the failedRecipients List     failedRecipients.Add(ex.FailedRecipient);   }    // Return the List of failed recipient e-mail addresses, so the client can maintain its list.   return failedRecipients; }