Our client has SSO installed, and have more than 30 users with the SSO, but seems that 2 users are not receiving any emails, there is an error for Full mail box, but this is not the case for the 2 users that are having the issue. Acumatica emails are being sent and processed with no issues, our client reviewed the users and nothing seems to be out of order with those users.
If someone has had a similar issue and was able to solved it let us know, I appreciate the help.
Error: 554 5.2.2 mailbox full; STOREDRV.Deliver.Exception:QuotaExceededException.MapiExceptionNamedPropsQuotaExceeded; Failed to process message due to a permanent exception with message [BeginDiagnosticData]Cannot get ID from name.
