aol email not pushing

I have an iphone. I set up two email accounts through AOL. I do not receive the emails even though I have all the settings to push. The only way I can check new emails is to manually pull down and update. I have deleted the accounts and reinstalled them. All my settings are correct to receive emails in notifications. Is there a fix for this or is it a software issue? I use Verizon and just upgraded to ios 6.1.