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Pete, Networking Engineer
Category: Networking
Satisfied Customers: 17318
Experience:  CISCO Certified Networking Engineer
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All of a sudden, I'm get a 5.7.1 Authenion need notice.

Customer Question

All of a sudden, I'm get a 5.7.1 Authenion need notice.
JA: Can you describe your network setup (devices and cables used)?
Customer: Verizon FIOS Thunderbird and i am next to the router.
JA: What happened right before this popped up?
Customer: Nothing that I noticed.
JA: What troubleshooting have you tried?
Customer: I went through all my Thunderbird settings and nothing seems unusual
JA: Anything else you want the network expert to know before I connect you?
Customer: In the past when i got this message somehow my Thunderbird settings were screwed up
Submitted: 10 months ago.
Category: Networking
Expert:  Pete replied 10 months ago.

Hi, I'm Pete. Welcome to JustAnswer! I'm reviewing your question now, and will post back with your reply ASAP.

Expert:  Pete replied 10 months ago.

The "5.7.1 Authentication" message usually means that the SMTP server couldn't authenticate you as a legitimate user.

Does this happen only when you try to send email, or receive email, or both?

Who is your email service provider?

What is the second part of your email address (after the @ symbol)?

Expert:  Pete replied 10 months ago.

Hi, just checking in on your question, do you need any further assistance?

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