SSRS 2016-发送邮件失败：操作已超时。将不会重新发送邮件

Question

I am constantly getting the following error when sending out email subscriptions (data driven)

   at Microsoft.ReportingServices.EmailDeliveryProvider.EmailProvider.Deliver(Notification notification)
notification!WindowsService_5!2754!07/31/2018-10:12:22:: e ERROR: Error occurred processing subscription ec52efbe-63be-4b47-85e1-fa8f850d76ab: Failure sending mail: The operation has timed out.Mail will not be resent.
notification!WindowsService_5!2754!07/31/2018-10:12:22:: i INFO: Notification 8290464c-90d6-4e58-859e-33f4a4e24a74 completed.  Success: False, Status: Failure sending mail: The operation has timed out.Mail will not be resent., DeliveryExtension: Report Server Email, Report: Invoice, Attempt 0
emailextension!WindowsService_5!8c0!07/31/2018-10:12:33:: e ERROR: Error sending email. Exception: System.Net.Mail.SmtpException: The operation has timed out.
   at System.Net.Mail.SmtpClient.Send(MailMessage message)

I don't think it's the report timing out as it runs fine for file share subscription without any errors.. Only about 60 - 70 emails are generated at any one time and more than 75% fail with the above error.. yet I have the same report doing over 400 for file share and they all work fine. (0 errors)

I've looked at report server settings and increased the session timeout value etc.. but hasn't made any difference..

I'm using SSRS 2016 (64 Bit) Enterprise on Windows Server 2012 R2 (64 bit)

I can't seem to find any sort of definitive pointers online.. any help would be appreciated

Answer 1

For those who come across this and wonder how to fix this issue.. I cannot believe this hasn't been suggested ANYWHERE!

Change the time out on the Dataset for the Data Driven subscription. This fixed the error I was encountering! So simple..

Mine was set at 30 seconds.. I changed this to 100 and it worked fine. but my report run in under 3 seconds per report.. changing this value to 0 make it not timeout. Not sure if that is a wise idea or not..