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user_yrnp93
1st Topic
1st Reply

3 Messages

Friday, April 19th, 2024 12:51 PM

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authentication required error message

I'm getting the below error message when trying to send an email to anyone, even people in my Contact list:

Message could not be sent to the following recipients ..... Authentication required

Question

 • 

Updated 

9 months ago

843

14

0

user_v6fil9

1 Message

1 year ago

getting the same thing

1

user_00e8xd

2 Messages

1 year ago

I am getting the same message

0

user_lwt7yy

3 Messages

1 year ago

I'm getting the same message  04192024  854AM

1

XfinityAmira

Official Employee

 • 

4.1K Messages

Hello @user_yrnp93! Thanks for reaching out on our Forums. I'm sorry to hear you experienced that error on your end as well, but we appreciate you updating us and letting us know that it is working again. 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

1 year ago

0

user_a9510h

1 Message

1 year ago

getting the same thing

1

XfinityAngie

Official Employee

 • 

1.8K Messages

 

user_a9510h, Thanks for reaching out to Xfinity Support. I'm sorry to hear you are having issues with your email. When you get this error message, do you get an error code with it? If so, can you share that with us?

 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

1 year ago

0

user_00e8xd

2 Messages

1 year ago

It is working now, but that was weird!

0

0

user_yrnp93

3 Messages

1 year ago

Actually, I just tried again and now everything seems fine. Was able to send an email. Must have been a temporary glitch.

0

0

user_lwt7yy

3 Messages

1 year ago

I just tried again and email went through! 

0

user_b5rkyx

1 Message

1 year ago

I'm getting the same message.  How do I tell comcast??????

3

user_yrnp93

3 Messages

Try again. Seems fine now

1 year ago

0

user_lwt7yy

3 Messages

@user_b5rkyx​  try again....it seems to have fixed itself!

1 year ago

0

XfinityRoberto

Official Employee

 • 

1.7K Messages

Hello and welcome to Comcast. Thank you so much for reaching out to us today regarding the error message you are receiving. You are in the right place and we are happy to assist you. Have you tried to clear out cache and cookies? 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

1 year ago

XfinityJustinC

Official Employee

 • 

1.2K Messages

1 year ago

Hello, user_yrnp93 thank you for taking time out of your day to create a post, I know how important it is to be able to send emails. I'm glad to hear that sending emails is working again. 

 

If you're using a 3rd party email client and run into errors in the future, it is good to check your settings to ensure nothing changed: https://www.xfinity.com/support/articles/email-client-programs-with-xfinity-email?linkId=153050254. And to ensure the 3rd party access is on: https://www.xfinity.com/support/articles/third-party-email-access. 

 

Here is a great document that has some specific errors and fixes if you ever run across any of these: https://www.xfinity.com/support/articles/email-errors. 

 

1

0

user_jgsv2t

1 Message

I too am receiving an authentication email message: 

"Message could not be sent to the following recipients: ["-[Edited: "Personal Information]" <-[Edited: "Personal Information]>] (550 - 550 5.1.0 Authentication required)"

I redacted the actual email, but I have sent to this email before.

I am using the web-based Xfinity email client -- there's no 3rd party email client being used here.

(edited)

1 year ago

0

cantlivewithem

New Poster

 • 

2 Messages

1 year ago

Message could not be sent to the following recipients: (550 - 550 5.1.0 Authentication required
)

Getting the same message (bolded above); tried from multiple of our comcast email accounts and none will let us send email...

0

0

TucsonMike

Frequent Visitor

 • 

7 Messages

1 year ago

Same message on different devices, using only Xfinity web email, no client intermediary. Must be Xfinity problem.

0

0

user_jrzipp

1 Message

1 year ago

not able to send emails from phone or computer.  any updates?

0

0

user_b6g84c

2 Messages

1 year ago

I'm getting the same error message.

1

0

XfinityJorge

Official Employee

 • 

2.1K Messages

 

user_b6g84c Hey there! Thank you for using our Forums and letting us know that you are also having issues. How are you sending these emails? Via desktop or mobile device? 

 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

1 year ago

0

user_f6afr9

1 Message

1 year ago

We're getting the same issue even after clearing the cache

2

XfinityJustinC

Official Employee

 • 

1.2K Messages

@user_f6afr9​ thank you for taking the time out of your day to reply to this post. I definitely want to help resolve the email concern, to help better assist:

- how are you sending the emails, via the website or App? 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick
I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

1 year ago

0

DmitriK

Visitor

 • 

2 Messages

I am sending using postfix server.

Error:

956C4158021F: to=<xxxxxxxxx@comcast.net>, orig_to=<root@xxxxxxxxx.com>, relay=smtp.comcast.net[96.102.18.197]:587, delay=6.2, delays=0/5/1.1/0.09, dsn=5.1.0, status=bounced (host smtp.comcast.net[96.102.18.197] said: 550 5.1.0 Authentication required (in reply to MAIL FROM command))

(edited)

9 months ago

0

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