This has been happening on and off for a couple of months now. Basically the client keeps getting her account suspended for exceeding the daily email sending limit but she doesn't send anywhere near the required amount of email to hit the limit. We just ran an activity report through Google and that said that she'd only sent 54 emails for the month of January.
I thought she might have been hacked so we changed passwords. Also checked the login activity, but that only showed her home and office IP addresses (as well as mine since I'd logged in to troubleshoot). There are no weird emails in her sent folder, just emails she's sent.
I've just added an SPF record to see if that will help.
Is there anything else that I can do to find out why she keeps hitting this sending limit?
PS - it's a free Google Apps account so talking to their paid support isn't an option at this point.