WDK99's profile

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8 Messages

Thursday, March 9th, 2023 6:14 PM

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Error - Could not connect to SMTP server

​I am on a Mac, Ventura 13.2.1​

​I bought a new phone and went to Xfinity store to change my plan. They said do it on the app, so I did but did not have my password, so I reset it there in the store. That is when all heck broke loose. I went home and all my email accounts were not able to connect to the SMTP server, so I changed the one account password, still no go. So I switched from POP to IMAP on all 4 email accounts and it worked great! ​

​The next morning I get emails on all 4 accounts that there was suspicious activity (duh) and I had to change my passwords. So I did on three emails, the forth it won't let me and calling has not helped. Now I can't connect to the SMTP server on any of the email address' nor can I receive email on the one that I can not change the password. ​

​I tried everything I could find online. I even deleted one email account from Mac mail and now I can't re-install it. ​

​In summary I have 2 of 4 accounts that will receive emails, none that will send emails. One I cannot re-install, and one I cannot change the password.​

​I have no idea what to try next.​

Accepted Solution

New Poster

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8 Messages

2 years ago

This worked until I tried to get my other devices on-line: After much messing around with the passwords, I have them all fixed. Turns out on the Mac there are several ways to update a password, the key is to find the right place to update it so it sticks. First I went into Keychain and deleted as many old passwords as I could find, but still did not get it to work. What finally worked - open the Connection Doctor window, click on the account that is not linking. Update the information to be EXACTLY the way it should be, i.e. account name, password, port, etc. Updating the information in Mail Preference or in System Preferences doesn't stick.

(edited)

Official Employee

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352 Messages

That is so great to hear that you were able to figure it out. It is always exciting when everything works out as it should! Thanks so much for the update. 

I no longer work for Comcast.

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

New Poster

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8 Messages

Last update, I hope. All my accounts are now working on both Macs (haven't tested all the mobile devices, but should be OK). What I said before is required, to cleanup all the old passwords in Keychain. But also what @flatlander3 said about getting out of server jail. What I did was point all my SMTP logins to just one of my accounts. Overnight I found that the other three had cleared up and connected. I then switched that last account to a different one and overnight it connected. Looks like that is it, fingers crossed.

Problem Solver

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1.5K Messages

2 years ago

Xfinity uses a Dovecot server for the SSL/authentication front end.  I found some oddities with Mac mail while looking for something else on one of those servers.  If you're look at the server side logs, you find that Mac mail makes multiple connection attempts in rapid succession -- 8 or more, as it tries to auto-configure an email account while trying different encryption schemes.  It's trying to be helpful.  I call it a misbehaving email client.

In the default config file for Dovecot, there's a limit of 12 connections allowed from a user from the same IP address.  I don't know what Xfinity sets.  Another thing that happens with a Mac, is the mail app is active regardless if you launch the app or not.  It will still reach out and connect on a boot or resume.  So if you've got 3 accounts dogging the server, and trying to setup another one that is failing configuration, you're going to end up in authentication timeout jail.

One possible work around that I found:  Open your mail app.  On the top banner, goto mail --> preferences, and disable the Xfinity accounts you have currently.   Also, if you got other devices currently on your network that check your Xfinity email (phones, etc), temporarily disable WiFi or Ethernet for those.  You're trying to stop those connection attempts too.  For the email account that doesn't work, remove that partially configured one so it's not dogging the server.

Timeout jail lasts for 10-15 minutes depending on what they set.  So then you just wait 10-15 minutes.  After that, try to setup the email account that doesn't work.  If that is successful, wait till it loads all the email for the account, and then enable the other accounts one at a time, and turn the rest of your stuff back on.  Once they are configured, they seem to stay that way and don't connection bomb the server.

Perhaps it will work for you too.

New Poster

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8 Messages

@flatlander3​ Thank you, worth a shot. I thought maybe I got locked out because I was hitting it too much.

New Poster

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8 Messages

@flatlander3​ I turned off 4 of my 5 devices, Took everything offline and waited and tried turning things on. I did this several ways and several approaches but still never connected. I did decide to go back to POP since I like the functionality better, but still no outgoing mail, only 2 of my now 5 email accounts receive mail. I guess I will try again tomorrow and try calling Xfinity helpline.

Problem Solver

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1.5K Messages

@WDK99​ You can try setting it up the account manually too.  Disable the others.  From mail --> preferences, select the account.  From the server settings tab, uncheck "automatically manage connection settings".

Inbound:

username = you(at)comcast.net

password = your password

hostname(pop) = pop3.comcast.net

port(pop) = 995

authentication = password

Outbound (uncheck automatic again):

username = same

password = same

hostname = smtp.comcast.net

port = 587

authentication = password

Now let it sit there for 10-15 minutes to clear timeout jail again.  You want to make sure all the active state connections time out on the remote end.  THEN, hit the save button on the lower right corner.

*adding:  Xfinity does get wrapped around the axle too.  Before you try this, use the front door on Xfinity.com.  Try logging in there with the account username/password.  Sure, you may have changed your password, but does Xfinity know that, and did the password change actually stick??  I'd verify that by accessing mail via webmail.  Perhaps your password change did not stick. 

** Sorry, last one.  As long as you are in there on webmail, from the mail settings tab, make sure "allow 3rd party app" is checked.  Perhaps it got reset somehow:  https://www.xfinity.com/support/articles/third-party-email-access  You're going to want to look at the setting for "automatically forward email" too -- that's the gear icon in the top right.  Make sure there is no stray email account in there.  There was a email hijack problem going on earlier this year that xfinity doesn't want to pony up to.

(edited)

Official Employee

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194 Messages

@WDK99​ I've sent you a a private message (chat/note icon upper right corner).  If you can reply to it with the details asked for, I'll see what I can figure out.

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

New Poster

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8 Messages

@flatlander3​ I'm trying the 587 suggestion. Other than the one email I can't change the password, all the others I can log in and get to my mail. Also, "allow 3rd party app" is checked and there is nothing in "auto forward."

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