Emails not sending to correct address

Hi All,

Updated to V5 but emails are not sending correctly. the .env file is set up correctly however its sending emails to a random address. see smtp log below

vent: rejected rejected
User: -remote-
Domain:
From Address:
Sender:
Sent Time: Apr 5, 2021, 2:59:14 PM
Authentication: unauthorized
Spam Score: 0
Recipient: nyPTHFsnzZYpnShzIXVoIROlpOGBKpWL@mydomain.com
Delivery User: overtonc
Delivery Domain: mydomain
Delivered To:
Router: reject
Transport: rejected
Out Time: Apr 5, 2021, 2:59:14 PM
ID: 1lTPlb-000B5d-ae
Size: 0 bytes
Result: No Such User Here

any help would be great thanks

Hi,

@david, any thoughts?

not sure, are there any meaningful errors in storage/logs/laravel.log or in the system_logs table of the database.