I recently setup virtual hosting on my ec2 instance and tried assigned to IPs to it(didn't work, switched back).
However my mysql database couldn't be accessed(I fixed it) and my php mailing scripts for collecting visitor data aren't working....I check the mail logs and relized it's not longer using google as a relay despite my google address being a verified address.
Btw, I wasn't using postfix or anything, I just let the internal apache messaging system send me the data and I forwarded it to the recipients who need it.
EDIT: SES works for mailing from verified addresses but the PHP mail() still doesn't work!?