9 Messages
Temporarily Blacklisted Account Message — Occurs Daily
Hello;
For the past month, my email client has been returning the message below, preventing me from accessing my email:
The server for account "< [Edited: "Personal Information"]>" returned the error "[ALERT] Temporarily blacklisted IP Address - try again later." Your username/password or security settings may be incorrect. Would you like to try re-entering your password?
• This error occurs in all of the email clients I've tried: Outlook (Mac), Thunderbird, and Apple Email, and iPhone.
• No settings or options have been changed during this time, and everything worked as expected for years until this past month.
• The problem always 'fixes itself', where it suddenly starts working again for a couple of days and then the problem returns.
• I have changed my password several times over the past couple of weeks, and doing so does not fix the problem.
• This error does not prevent me from accessing the email directly through the Comcast/Xfinity online web portal.
Sample error notice below:
Why is this happening, how can I fix it?
VERY FRUSTRATING.
Webfeet
Frequent Visitor
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9 Messages
4 months ago
Same problem here. I noticed it when I apparently never received an important email that should have been retrieved from Comcast into my Gmail account. When I check the log I saw that there were recurring "temporarily blocked episodes" including 1 today. I am a Comcast subscriber and I am using Google Fi which is T-mobile. It is happening both on my desktop computer which has no wifi connection and on my Android phone. So it has nothing to do with not being a subscriber, using Verizon, using WiFi or no longer being a Comcast subscriber. I hope to come back here someday and find a resolution. In the meantime I will be slowly migrating all my internet logins from Comcast to Gmail. I can't live with this.
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user_86qjy5
New Poster
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4 Messages
3 months ago
Add me to the list of growing disgruntled. I had this start happening about a month and a half ago. After three phone calls things seemed to have gotten resolved but a few days ago it started happening again. Every time I call they seem to want to push me to using the website email but I keep telling them that is a non-starter. I also tell them I am NOT going to change my email every time this happens. I use Thunderbird and have for years without trouble until lately so they have changed something on their end that is causing these false blacklistings but won't admit it. Their only answer as to why this is happening is that I must be sending SPAM, but this is my home email account and I haven't sent an email in weeks.
(edited)
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user_65tdmb
2 Messages
3 months ago
I have had this problem for a few months now. My email client is eM Client (free version). I have had a Comcast.net email account for many years and my ISP is Xfinity. (I also have an AT&T email account in this same client that has never had a problem). I read through all of the postings in this thread looking for a solution and see nothing but frustration at the offers of help from Xfinity tech support and no posting of a final solution. This can’t be a solve-one-at-a time problem.
It finally dawned on me that I also can’t access a few commercial websites because they don’t like my VPN. I use a Norton VPN and sometimes have to turn it off to gain access to a website, then turn it back on once I’m in. So I turned the VPN off when I got this “blacklisted IP address” message and my Comcast emails came through. After I receive my emails I immediately turn the VPN back on. After that, the email client will continue to receive my Comcast emails properly for a few days before the message reappears. After that, I do the same VPN off/on thing again.
If anyone having this problem is working through a VPN, I might suggest try turning it off long enough download your emails and see if that helps. I would also suggest that Xfinity look at their email system to see if they have an issue with recognizing a VPN when uploading emails to external email clients.
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Rgus63
Visitor
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1 Message
3 months ago
You gave no resolution.
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chrisp12
1 Message
2 months ago
ok, this is a long thread and I admit I didn't read it all - but came across this when researching the solution to this same manifestation of this problem, but mine appears from gmail.com. I have my @comcast.net address polled by my gmail account, so it must be blacklisting google. it will work for a couple days, then I'll start missing emails and realize that the error is happening - at which point I have to go manually check my comcast account. I take it there's no resolution to this - but hopefully this is new information that this happens from gmail's POP3 access. that's obviously not an individual ip address that has had problems. actually, it's happening right now for me (well, I'd show a screenshot but can't figure out how to post one)
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user_215ced
Visitor
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1 Message
2 months ago
Xfinity has bots that pretend that they are people and will apologize and give no help. Do you trust a DM when you are on a forum?
I have had this problem only on my Windows laptop (not iPhone or iPad). My solution has been to restart my laptop. If it were truly "temporarily" or "permanently" black-listed (I've seen both), I would not be able to use xFinity email using the web nor on my Apple devices. My Windows is on ethernet because WiFi keeps bouncing. My Apple devices use WiFi or cellular.
If you have rebooted and it still persists, figure out how you can call and talk to a person - not one of these AI "people" who rarely give answers to your questions.
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user_rkgx65
2 Messages
2 months ago
I appear to have just learned a lesson about this the hard way. I was a Comcast customer for a couple decades before moving to a fiber solution, but maintaining two of my old Comcast email accounts. I configured Gmail to retrieve and label emails for them long ago, and that has mostly worked fine ever since. This morning I realized that the address associated with an online account I needed a verification code from was one of these two old Comcast accounts and that I did not receive the code. I saw the same error everyone here has seen on both of my accounts when I checked the Gmail settings from a browser on my PC. I managed to get through to support on the phone and changed the password to one of my two accounts, which did not resolve anything.
While we were talking, I simply logged into the other account from my browser directly from xfinity.com, and THAT ALONE is what resolved the POP3 blacklist problem for that one of my two accounts. That one works fine now, with Gmail regularly able to pull emails from it, and I am certain that the solution was simply to log in directly from a local browser, which apparently unblocks the IP. Unfortunately, the other Comcast address is the one I use most, and that one is a bit MORE broken now because I changed the password for it, and I am not allowed to update the password in Gmail's POP3 settings because attempts to update the password are now failing with the same error:
Server returned error: "[AUTH] Temporarily blacklisted IP Address - try again later"
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user_nq7tzo
1 Message
2 months ago
I was experiencing this on my iPhone with 3 comcast e-mail accounts tonight. Tried many things described above then finally thought I would check my Norton 360 VPN that I have on the phone for when I use a public WiFi. In settings, it showed the VPN was connected, even though I was in my own home on a secure network. When I originally set up the VPN, it was supposed to turn off when connected to my home network. It showed that it was set to Connect On Demand. I turned that button off and it showed that the VPN Status was Not Connected. I went into each account while on my home WiFi and e-mails started to come through finally. I'm assuming that the Server used by the VPN is what was getting blacklisted. To backcheck everything, I reset Norton 360 to only turn on for unsecured WiFi, and made sure my home VPN was set as secure where the VPN would turn off. I then turned on the VPN again and sent a test e-mail to all 3 accounts, and the same Blacklist Alert came up again in each. So don't trust that your VPN is turning off on your secure network, and don't set it for Connect On Demand. Just turn it on when you leave the house. Hope this helps some of you that have not resolved your issue.
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1750Mike1
1 Message
2 months ago
I’m having the same issue. Seems to have started when I upgraded to iOS 18
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user_uzydjc
1 Message
2 months ago
I found out it was my Norton VPN that was getting me blacklisted. Shut it off and bam it was working.
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apbeach80
New Poster
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2 Messages
2 months ago
Chalk up another one. Laptop updated to newest of Sequoia today. Now on my home wifi, I get the blacklisted message. Same on my phone. If I turn off my wifi on my phone, I can get my emails. So the presumption is that a major carrier has blacklisted another major carrier (CSpire).
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user_a87902
Visitor
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1 Message
1 month ago
This started happening to two of us a couple of days ago on our iphones. We only can get emails with our VPN turned on. Otherwise our ip address is blacklisted.
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user_3820su
1 Message
1 month ago
This is still happening and the level 3 support can't fit it either
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Webfeet
Frequent Visitor
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9 Messages
1 month ago
My solution was to give up on getting my Xfinity email through my Gmail interface and now go directly to Xfinity and Gmail accounts separately. I am sure that makes Xfinity happy.
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user_bk161
9 Messages
1 month ago
So it appears that this thread is still receiving a lot of activity, and as the original poster, here's where things stand ~10 months later —
The most recent communication I had with Xfinity is posted below. This occurred back in April 2024 (about 3 months after onset). I can confirm that as of this post, I have not experienced this error since April. HOWEVER, I still don't know what caused the problem, and the solution stated in the text below doesn't completely make sense to me since I only access this email with 2 devices (desktop computer and iPhone) and neither of those had been updated or changed prior to the problem — the problem just happened on its own.
So to recap, someone on the Xfinity side did something to fix the issue and I don't know what it was.
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