I've an admin@mydomain.com email address which receives emails from clients and delivers it to various people within my company. However, since today I get the following bounce error message when sending an email to this address:Delivery to the following recipient failed permanently:admin@mydomain.comTechnical details of permanent failure: Message rejected by Google  Groups. Please visit  http://mail.google.com/support/bin/answer.py?hl=en&answer=188131 to  review our Bulk Email Senders Guidelines.The Bulk Senders Guidelines describe how to send out bulk emails. However, in my case I only receive one email and distribute it to a couple of people within my company. Same problem applies to the team@mydomain.com email address which we use internally.Does anyone know how to resolve this issue?UPDATE: I just realized that emails coming from the outside and being sent to this address still work. It just seems to be emails coming from my domain. I found a solution and posted it below.
Google Apps bounces bulk emails
google apps;email;google apps email