Which ISP or domain name is your email address associated with? Don't provide your actual email address on this public forum.
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.
As a consumer myself, I have experienced the same issue with my e-mail account. Good news is this can be fixed. What make/model phone do you have? Have you recently changed your e-mail password for this error to pop up?
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If my response answered your question please click the _Correct Answer_ button under my response. This ensures others can benefit from our conversation. Thanks in advance for your help with this!!