I am having issues with my comcast outgoing email over SMTP from my home wifi network. When I atttempt a telnet test I am getting the "421 resomta-a2p-647652.sys.comcast.net resomta-a2p-647652.sys.comcast.net Excessive failed authentication, ESMTP server temporarily not available" error message. It

I am a former xfinity subscriber that kept my email address. I access my email through Thunderbird and recently I started to get this error message when I attempt to send messages -- An error occurred while sending mail: The mail server sent an incorrect greeting: resomta-ch2-15v.sys.comcast.net res

I live in a retirement complex with a couple of hundred other residents. Many of the other residents use Xfinity for email. About 5-6 weeks ago, a number of us began having sporadic email problems when trying to sync our Xfinity email using a local mail client -e.g., Apple Mail, Outlook, Thunderbird

smtp;554 resimta-a1p-087402.sys.comcast.net resimta-a1p-087402.sys.comcast.net ESMTP server not available

All of a sudden today I'm getting the following error message when trying to send an e-mail via Thunderbird: resomta-a1p-077245.sys.comcast.net resomta-a1p-077245.sys.comcast.net Excessive failed authentication, ESMTP server temporarily not available. I have seen this issue in the forums, but never

On Dec 12, 2024 I posted regarding this error when I try to send e-mail out of Thunderbird using a Windows 11 computer. I thought I had the problem fixed, but it returned today (01/02/2025). I found that if the McAfee VPN is turned on, you MIGHT get this error. Turn off the McAfee VPN and it instant

A friend gets an error message a couple of times a week when he sends emails to me. The complete message is: : 554: resimta-c2p-559906.sys.comcast.netresimta-c2p-559906.sys.comcast.net ESMTP server not available Most of his emails go through OK, but occasionally the error occurs. Any idea what cause

after being required to change my xfinity password when logging into xfinity mail, i failed to get new emails on my MacBook. i changed the password in the apple mail application, and was able to get incoming emails. however, outgoing emails would not go and the outgoing server shows as being "offlin

This was asked about 3 years ago but there was no resolution to the problem. In the last couple of day, I have been getting the following error when I try to send email from Thunderbird: An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-h2p-555030.sys.

For the past two weeks I have been unable to send email from any of my Comcast accounts using a third party app ( we use 2 different ones on our iPhones). All settings are correct. Both my wife and I are having this same problem. Please help. My log files display the following error when trying to s

Just stating getting this when using outlook, any ideas? 554 resomta-h2p-554993.sys.comcast.net resomta-h2p-554993.sys.comcast.net ESMTP server not available

I work at a retirement community where we have over 300 residents that live here and a lot of them use Comcast emails and we are noticing more often than before that the outgoing smtp server stops working for residents. Since we've gotten a lot of complaints recently I have been digging through fire

I am a former xfinity subscriber that kept my email address. I access my email through Thunderbird. I am able to send one, possibly two e-mails a day before I receive the following error message: Sending of the message failed. An error occurred while sending mail: Outgoing server (SMTP) error. The s

I am a former xfinity subscriber that kept my comcast.net email address. I access my email through Microsoft Outlook 365 on Windows 10 via a POP3 connection. My wife who has an identical laptop configuration is experiencing these same problems on her machine. About 3 months ago out of the blue, we s

For years I've used gmail POP3 to retrieve email from my Comcast email account. Recently I'm seeing this error: Server returned error: "[AUTH] Temporarily blacklisted IP Address". Email will be retrieved for a while after removing POP3 and setting it up new, but it always fails again. I see mention

Hi folks, I keep getting this error message when I try to send email. Can you assist?

My wife and I just got new phones (1 iPhone & 1 Android) and in attempting to setup our comcast.net email on them we continued to run into errors. The most recent error I received was "Can't Connect to Server - Temporarily blacklisted IP Address Try again later." That got me thinking that it sounds