Frequent Visitor
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18 Messages
Cannot connect with smtp outbound server
Receiving msg "Sending of the message failed. An error occurred while sending mail. The mail server responded: Please ensure your email address and authenticating user match when sending messages. Please verify that your email address is correct in your account settings and try again."
This started yesterday. I have not changed settings or passwords. Up until a few moments ago, both my xfinity email addresses were affected. Now my primary can send but my secondary address still can't.
Accepted Solution
johnk860
Frequent Visitor
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18 Messages
2 years ago
I found my own answer, which may be one already posted that I'm reading wrong (regrets). My item was to:
1. Click on the account name (i.e. [Edited: "Personal Information"])
2. at the "outgoing server"line, click on "edit SMTP server"
3. enter any description (I use "comcast", just because)
4. Enter the server name, smtp.comcast.net,
5. ensure port (465). Security (ssl/tls), authentication (normal password) are all correct
6. Set user name to be the account name (e.g. [Edited: "Personal Information"])
7. Click OK
Repeat that for your second mail address ( [Edited: "Personal Information"]) using the same server name
Repeat for each of your other mail addresses
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CCChristopher
Problem Solver
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577 Messages
2 years ago
@johnk860 Hello and thank you for reaching out over our Xfinity Community Forums. I am so sorry to hear about these email issues you are experiencing, that would definitely be really frustrating. You have reached the right place, and I would be more than happy to help in any way I can in getting to the root cause of the issue, and in getting you back on track again. To get started, could you please send our team a direct message with your full name and full address? Our team can most definitely take a further look at this issue.
To send a "Peer to peer" ("Private") message:
Click "Sign In" if necessary
• Click the "Peer to peer chat" icon
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line
• Type your message in the text area near the bottom of the window
• Press Enter to send it
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user_9ce0c9
Visitor
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3 Messages
2 years ago
I have the same problem. I've used Thunderbird comfortably for years with Xfinity, & yesterday (Nov. 18) I got the error message described above by Johnk860. However, I have a clumsy workaround (in Thunderbird only!) that allowed me to send the messages that were bouncing off the Xfinity SMTP server: I went into Thunderbird via >Tools>Account Settings pulldowns. At the bottom of the resulting subwindow is an "Outgoing Server (SMTP)" line. At its end is an "Edit SMTP Server..." button, which I pressed to get an even smaller subwindow. At the very bottom of that subwindow is a "User Name" line.
The problem for me is that Thunderbird won't let me change this line for each of the 4 email accounts I have with Xfinity - it only allows ONE User Name, which I had set to the the one associated with the default account, for all 4 accounts. To send messages from the other 3 accounts, I have to temporarily change the User Name to match the account I want to send from.
It's clear that, at a minimum, the Xfinity SMTP server expects the "User Name" to be unique for each account, which isn't possible with Thunderbird as it currently stands. This appears to be a recent change at Xfinity, since Thunderbird has previously worked well for years with a single User Name for multiple accounts in the past.
I'm running Thunderbird 102.5.0 (64-bit) on Windows 10 (Version 10.0.19044 Build 19044).
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BSmith586
Visitor
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1 Message
2 years ago
I have the same problem with my Thunderbird POP accounts, but NOT with my IMAP accounts. Can anyone account for the difference?
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user_660f53
Visitor
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2 Messages
2 years ago
@user_9ce0c9 is on the right track! Up to now, I've used one SMTP profile for all of my many accounts. Neither Comcast nor Thunderbird never cared before.
When I go to account settings (in Thunderbird) and scroll way way down below all of my mailbox accounts, I see the "Outgoing Server (SMTP)" setting. Clicking there shows me a box. To the right of the box (maybe off screen for small screens) is a magic button labeled "Add..."
I think I'll add each of my Comcast email addresses and credentials. It'll be a pain, but I need to do it only once.
Have fun everybody!
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XfinityAlex
Official Employee
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902 Messages
2 years ago
Hey folks,
Let me know if you're still having troubles. Yes, the policy is changing, though we're trying to allow folks to "grandfather" in and continue doing what they've been doing as long as they do so consistently. I'm happy to inspect this for anyone who believes they're meeting the "grandfather" clause, and give exemptions where necessary. We apologize for any inconvenience this may cause. Also keep in mind that the webmail at https://connect.xfinity.com/ should work as well.
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BruceW
Gold Problem Solver
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26.3K Messages
2 years ago
What "policy" are you referring to, and what is changing exactly?
Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.
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BruceW
Gold Problem Solver
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26.3K Messages
2 years ago
Back in November, @XfinityAlex wrote: "... Yes, the policy is changing ...", but failed to indicate what policy was being referred to and what the change was. So I asked "What 'policy' are you referring to, and what is changing exactly?". @XfinityAlex replied "Working to create a pinned post so it's not attached to this thread".
As best I can tell, no pinned post has appeared, we still don't know what @XfinityAlex was talking about. So I ask again:
What "policy" are you referring to, and what is changing exactly? Please?
Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.
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XfinityAlex
Official Employee
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902 Messages
2 years ago
@BruceW Hrm, I wrote it up, but I guess we didn't post it. I'll follow back up with Mgmt to see if we can make that post happen. The policy change should be non-impacting for most users. The From address and the Authenticating user should match going forward (as of a few months ago) when the From address is a "comcast.net" address. We should have exempted those who had been previously using it. However, if they do not continue to use it, the exemption will expire after some time.
Ignoring the exemption situation noted above:
Allowed: auth: user1 (at) comcast.net ; from: user1 (at) comcast.net
Allowed: auth: user1 (at) comcast.net ; from: user@at) elsewhere.net
Disallowed: auth: user1 (at) comcast.net ; from: user2 (at) comcast.net (or vice versa)
Does that help answer the question?
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BruceW
Gold Problem Solver
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26.3K Messages
2 years ago
It probably would have if the Nanny filter hadn't trashed it! But I gather that the essence is, as you say, "The From address and the Authenticating user should match". So if I authenticate as "Harry (at) comcast", the from line should also be "Harry (at) comcast", and not say, "Bill (at) comcast" (take that, Nanny!).
Got it, and thank you!
Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.
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