Visitor
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1 Message
Cannot access IMAP server, get "Temporarily blacklisted IP Address" on phone and outlook.
Yesterday, my wife and I both started getting prompted for our passwords on our comcast.net email accounts on both outlook and our iPhones. On the iPhone, I the error "Server code "ALERT:, server message "Temporarily blacklisted IP Address".
Note xfinity isn't in our new location, but we've been accessing our legacy email for over 8 years here. If I connect with VPN enabled, it works on the PC so it's something with our MidCo IP address which has been working for several months since we switched in the summer.
XfinityJeff
Official Employee
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441 Messages
2 days ago
Good morning @bitsmithsys, and thanks for posting to the Xfinity forums with your issue, I hope this message finds you well. As someone that uses email for both work and personal, I can understand how frustrating it can be if you cannot access your email. When you are getting this error, are you checking the email using the Xfinity website, or a third party app such as Outlook?
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user_w8rsh7
Visitor
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1 Message
2 days ago
I am having the same problem on all my devices. please help!
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resmopar
Frequent Visitor
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8 Messages
18 hours ago
I am experiencing the same problem here as well. Former Comcast customer here since October 2017 when I moved out of their territory. I use Thunderbird here to handle my two Comcast email addresses. Working without a hiccup for past 8 years. Suddenly, on Saturday December 6th, Thunderbird threw an error saying IP address temporarily blacklisted. Then Thunderbird prompted and said login failed and gave me choice to either enter new password or cancel. I hit cancel and waited an hour. Tried again and Thunderbird did connect and seemed fine. Then, within 20 minutes, got the blacklisted IP error again followed by prompt saying login failed and to enter new password or cancel. As the OP mentioned, if I connect using a vpn, I can connect like normal and all is good. I also have one of my Comcast email accounts on my Android phone being handled via Gmail. It works fine on my phone. In searching for this error, I did come across several sites, including Xfinity, stating they are migrating all comcast.net email addresses to Yahoo Mail. It states we will be notified when it's time to migrate over. I have yet to receive notification. One last note: I can access both of my email accounts thru the Xfinity website without any problems. I'll monitor this thread for further updates.
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