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Sending Email with Attachment Larger than 50MB Results in a Vague Error

Date Published: Nov 20,2017

CategoryPlanned First Fix Release:Will Not Fix; Product:Communication Tools,Course Tools; Version:Learn 9.1 Q2 2017 (3200.0.0),Learn 9.1 Q4 2017 (3300.0.0),Learn 9.1 Q2 2018 (3400.0.0),Learn 9.1 Q4 2016 (3100.0.0-rel.107+401e,SaaS
Article No.: 000062501
Blackboard Learn
Service Pack(s):
Learn 9.1 Q2 2017 (3200.0.0), Learn 9.1 Q4 2017 (3300.0.0), Learn 9.1 Q2 2018 (3400.0.0), Learn 9.1 Q4 2016 (3100.0.0-rel.107+401e, SaaS
If an email is sent with an attachment that is larger than 50MB, a vague error is thrown: "Some or all recipients may not receive the message."
Steps to Repeat:
  1. Log into Blackboard Learn as an Instructor
  2. Access any Course
  3. Navigate Course Tools > Send Email
  4. Enter a Subject and Message
  5. Attach a file that is larger than 50MB
  6. Submit

Expected Behavior:
Either a success message is displayed, or an error is displayed clearly explaining that the attachment is too large

Observed Behavior:
A vague error is displayed:
An error or warning occurred while sending this email. Some or all recipients may not receive the message.


Sample from email logs:
2017-11-07 13:46:26 +1300 - sendMessage: isConnected returned true so rethrowing - thread=468 - com.sun.mail.smtp.SMTPSendFailedException: 552 5.2.3 Message exceeds maximum fixed size (52428800) 

Target Release:

Will Not Fix

Patch Available:


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