I have 3 sbcglobal.net emails. Two work flawlessly in Outlook the third I can send but cannot receive. This is a business account I've had for nearly 20 years so it is vital to my business. AT&T says it's not them as I can see the emails on att.net. But I can't create customer folders on att.net and will lose all I have. How can 2 accounts work and I rarely works in the last few months? Any assistance???