Google Account Permissions Hijacked?

[bil-hooper]

Are you already using OGCS?
Provide the version number.

Describe the question you have
Just now, I got a bunch of failed delivery notifications, hundreds of them, that had email addresses in my contact list, but with an ogcs suffix that made them undeliverable, and led me to believe that your software or connection to my google account has been hijacked. In the meantime, I have removed your application, and revoked access from your services to be able to connect to my account, but I wanted to make you aware of the situation.

Sample Email:

Address not found
Your message wasn't delivered to email.redacted@pattersoncompanies.com.ogcs because the domain pattersoncompanies.com.ogcs couldn't be found. Check for typos or unnecessary spaces and try again.

LEARN MORE
The response was:
DNS Error: DNS type 'mx' lookup of pattersoncompanies.com.ogcs responded with code NXDOMAIN Domain name not found: pattersoncompanies.com.ogcs For more information, go to https://support.google.com/mail/?p=BadRcptDomain

[phw198]

That's carefully engineered behaviour - https://github.com/phw198/OutlookGoogleCalendarSync/wiki/FAQs#why-am-i-getting-undeliverable-notifications-from-google-for-recipients-ogcs

If you want Google to merrily spam all your meeting attendees, turn off email cloaking in the OGCS settings.

[bil-hooper]

Thank you for the link and explanation, much appreciated