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TheCoreSquirrel
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Joined 6 years ago
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External client SMTP Relay with group alias in From address field -- fails to send
Here is the situation: 1. Using an inventory system that handles our packing and shipping lists a. System emails copies of shipment records to clients using SMTP relay i. System is set to use TLS on port 587 with server "smtp.office365.com" b. SMTP relay is successful when using my personal account as the username and password along with my name and my email address in the From Name and From Address fields c. SMTP relay fails when I change the From Name and From Address fields to our shared group name "Shipping" and address "shipping@xxx.com" with error "535 5.7.3 Authentication unsuccessful" 2. Our Outlook365 group is set up so that all members receive external mail to shipping@xxx.com and all members have the rights to send an email anywhere externally as shipping@xxx.com from within Outlook365. The problem happens when using an external client that is not Outlook. 3. The exact status message I get after changing the From Name to "Shipping" and the From Address to "Shipping@xxx.com" is this: Sending the email to the following server failed: smtp.outlook.com:587 535 5.7.3 Authentication unsuccessful [SN4PR0501CA0149.namprd05.prod.outlook.com] I'm doing this on behalf of our IT admin -- I am the inventory system admin and the IT admin has exhausted everything he can to adjust Outlook 365 settings. I've made many searches worded different ways and found similar but differing problems. This one seems unique. Is there a solution for this?Solved6.8KViews1like5Comments
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