My Mautic version is: v2.15.3
My PHP version is: 7.2
My problem is:
I have turned on bounce management for sendgrid on a few accounts and noticed that the bounces recorded in Mautic are x5 of what they are in Sendgrid.
I will look up a contact that has read the email and has bounced, their email has gone through successfully in Sendgrid but has been recorded as a bounce in Mautic.
I have no other bounce management systems in place other than Sendgrid
I suspect its related to soft bounces, where Sendgrid will attempt 3 times until it fails but sends back the first bounce regards which is flagged in Mautic as a Bounce (DNC)
ie 552 5.2.2 The email account that you tried to reach is over quota
This is a 5xx error but is really a soft bounce recorded in Mautic and successfully delivered in Sendgrid
These errors are showing in the log:
Steps I have tried to fix the problem: