Symptoms

When you try to use your iPhone or iPad mail app to send an email message that has an attachment that exceeds the size limit, you receive one of the following error messages:

Cannot Send Mail - The message was rejected by the server

Cannot Send Mail - Your mailbox is full

Cause

This issue occurs after you install one of the following cumulative updates:

Status

Microsoft is aware of this problem and will post more information in this article when a fix becomes available. 

References

Learn about the terminology that Microsoft uses to describe software updates.

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