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Spectrum is blocking email from Gmail to verify Roadrunner email

shidden_NC
shidden_NC Posts: 4 Spectator
in Email

I have several nc.rr.com (Roadrunner) email accounts that I have had for years. In the past, my nc.rr.com email accounts have been connected to Gmail through a POP3. However, Gmail is ending POP3. For the Gmail app, I can connect the nc.rr.com emails through IMAP. But, Gmail does not have an IMAP connection for the Gmail webmail (website). I have signed up for Postdirect to download emails from my nc.rr.com email accounts for Gmail webmail.

I also want to be able to send email from my nc.rr.com email accounts in the Gmail webmail. So in the Gmail settings, I added my nc.rr.com email accounts under send email as without any problems. However, Gmail requires that an email be sent to the email that you are sending from to verify the account. The problem is Spectrum is blocking that verification email. The error code is "550 5.1.0 sender rejected. Please see https://www.spectrum.net/support/internet/understanding-email-error-codes for more information AUP#In-1010".

I talked to Spectrum twice and they can't solve this. I have changed my Spectrum PW, cleared my cache, checked my SPAM and junk folders, and added google.com to senders allowed on my nc.rr.com accounts and none of this helped. I have no problem sending other emails from my Gmail account to the nc.rr.com accounts or from the nc.rr.com accounts. I have the same issue with all nc.rr.com accounts and I also tried to add send email as to an alternate Gmail I have and Spectrum blocked the verification email for that alternate Gmail too. Spectrum does not appear to be blocking ANY other emails to nc.rr.com. They are only blocking these emails from Google to verify the nc.rr.com accounts.

Comments

  • James_M
    James_M Posts: 5,462 ✅ Verified Employee Moderator
    edited February 25

    Hi & welcome!

    Based on the description for the error code: "This email account has been blocked from sending emails due to suspicious activity. Blocks will expire based on the nature of the activity." Please allow 24-72 hours and try sending the email again. If you are still getting an error code, please let us know.

  • shidden_NC
    shidden_NC Posts: 4 Spectator

    Ok, but keep in mind the verification email is coming FROM Google TO my nc.rr.com emails and this is the only email to my nc.rr.com emails that is getting blocked. I don't know why Spectrum would block legitimate emails from Google but I will wait…..

  • HT_Greenfield
    HT_Greenfield Posts: 1,272 Contributor

    Heard that. Your Gmail account would be of the gmail.com domain whereas the verification messages would perhaps be from a "no reply" account of the google.com domain.

    P.S.: In case you've not already by now surmised:

    1. 🔗 https://support.google.com/mail/answer/22370 ↳ 🔗 My recipients see my Gmail address 😊
    2. https://support.google.com/mail/thread/15476651/emails-sent-from-a-gmail-alias-are-being-marked-as-spam?hl=en ↳ " […] emails I send from these email aliases get marked as SPAm in recipients mailboxes. […] " 🙃
  • shidden_NC
    shidden_NC Posts: 4 Spectator
    edited March 2

    James_M, I waited 72 hours and tried having the verification email FROM Google sent TO my Spectrum nc.rr.com email and Spectrum blocked it again so same result as before. Error message is "550 5.1.0 sender rejected. Please see https://www.spectrum.net/support/internet/understanding-email-error-codes for more information AUP#In-1010". How do I get Spectrum to stop blocking the verification email from Google so I can add my nc.rr.com email to my Google account to send mail as? See screenshots below. (removed due to personal information included)

  • HT_Greenfield
    HT_Greenfield Posts: 1,272 Contributor
    edited March 2

    Heard that. In the meantime, seeing as how Google presumably terminated such POP support for security reasons, if the goal is to be able to access your Gmail and ISP email accounts via unified U.I., rather than trying to workaround the security-risk deprecation with yet another POP party as in Postdirect and whatever else complicating the equation, just curious if you've considered using a third-party email client software app according to common-denominator provider guidance instead.

    🔗 https://www.forbes.com/sites/daveywinder/2025/10/03/gmail-says-it-wont-deliver-insecure-email-from-january-2026/

    🔗 https://support.google.com/mail/answer/7126229?hl=en

    🔗 https://support.mozilla.org/en-US/kb/thunderbird-and-gmail

    🔗 https://support.google.com/mail/answer/78892

    🔗 https://www.spectrum.net/support/internet/mobile-email-setup email setup ☘️

  • shidden_NC
    shidden_NC Posts: 4 Spectator

    HT_Greenfield, I have but most of my use for my personal email is on my work laptop and the administrators there will not allow installation of a 3rd party email client software other than Outlook and they will not allow Outlook to connect with external email accounts. So what I need is a webmail application that I can access through a browser. The Spectrum webmail is horrible so I had been using Gmail. BTW, I contacted Postdirect and they have assured me that their service will still work even after Google disables POP3 connections so I am good for receiving nc.rr.com emails. This might be a lost cause and I might be forced to change from my nc.rr.com emails that I have been using for 15+ years but it seems like a ridiculous reason to have to do that, just because Spectrum is blocking the Google verification email.

  • HT_Greenfield
    HT_Greenfield Posts: 1,272 Contributor

    How long's it been since you gave your ISP's webmail U.I. a decent workout with a decent amount of email in there to give a workout to as in without any POP clients pulling all of the email down and out of there.

    Now back to the initial concern: No consolation but my testing indicates that Google's verification process for Gmail "send as" aliasing is actually failing before it even gets around to trying to send the verification message to your ISP email address as follows. It starts with the same TLS, certification, and open relay connection test that it would subsequently run every time you try to send alias-wise. It's not even going to send you the verification email if that doesn't pass to begin with.

    To Google's credit, they won't do so with any open relay SMTP service for security reasons. The open relay aspect of their connection test involves trying to connect with a test-case email address. The response they're looking for is that the test-case email address is unauthorized to connect whereas - while your ISP's SMTP is unequivocally not open relay - the response they're getting instead is that the connection attempt itself is suspicious. Google doesn't divulge to you the email address they tried with so that you might try to get it "white-listed" with your ISP because they are satisfied that the ISP's security policies not only meet but exceed that of Google's own. ☘️

    Over and out.

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