Hello OsborneHarvesting
Hi, I'm Karl and will be happy to help you today.
Based on your description, are the following assumptions correct
#1 - You can log into this account without any issues?
#2 - When you send a message to this account not using Quickbooks software, there are no issues receiving the messages?
#3 - This happens to ALL customers using Quickbooks or just specific customers assuming this involves more then one customer
If this exclusively involves messages sent by QuickBooks but are otherwise able to receive messages then it is an issue that needs to be resolved on the Quickbooks side of things - there is nothing anyone ca check since that would involve access to the customer systems
If you are unable to receive messages from anyone and have made sure that the mailbox quota has not been exceeded, then your only option is to contact Outlook.com support who have access to your account and can check for any anomalies.
To contact Outlook.com support, log into your account and click on the ? (top right)
#1 - Enter your question
#2 - When the results are returned, click on <Yes> under the question "Still need help?"
#3 - Proceed accordingly
