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Unable to send or receive email on Charter service

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Kevin Smith
Kevin Smith

I got these instructions from Charter.

How to set up Spectrum Email on third-party clients

Dear Spectrum customer,

Here's some helpful info you may find useful after our conversation.

You can easily set up Spectrum Email on your cell phone, laptop or other mobile devices.

To get started, make sure you have the following settings: 

   Username: Your full Spectrum email address

   Password: Your Spectrum email password

   SSL: On

   Protocol: IMAP

   Incoming Server Port: 993

   Outgoing Server Port: 587

   Requires Authentication: Yes, or checked

You'll also need to enter your incoming email server and outgoing email server. The server that allows you to send mail is the outgoing or SMTP server. The server that lets you receive mail is referred to as an incoming, POP or Mail server. Those will vary based on your domain, which is the part of your email address that follows the @ symbol, such as charter.net.

The problem is with connection security. The only 3 choices you offer are none, start tls or ssl/tls If you add a choice of just ssl my roadrunner email will work just fine.

This is what senders see when they try to send me an email Subject: Mail System Error - Returned Mail with Subject: Test From: Mail Administrator <Postmaster@msg.pkvw.co.charter.net> Date: 4/7/2026, 10:36 AM To: ksmith29@carolina.rr.com This Message was undeliverable due to the following reason: Each of the following recipients was rejected by a remote mail server. The reasons given by the server are included to help you determine why each recipient was rejected. Recipient: <Ksmith29@carolina.rr.comh> Reason: 5.1.1 <ksmith29@carolina.rr.comh> Recipient address rejected: User does not exist. Please reply to <Postmaster@msg.pkvw.co.charter.net> if you feel this message to be in error. Reporting-MTA: dns; p-mtain018.msg.pkvw.co.charter.net Arrival-Date: Tue, 7 Apr 2026 14:36:37 +0000 Received-From-MTA: dns; p-impin025.msg.pkvw.co.charter.net (47.43.26.180) Original-Recipient: RFC822;<ksmith29@carolina.rr.com> Final-Recipient: RFC822; <ksmith29@carolina.rr.com> Action: failed Status: 5.1.1 Remote-MTA: dns; mail-twc-com.msg.pkvw.co.charter.net (47.43.26.4) Diagnostic-Code: smtp; 550 5.1.1 <ksmith29@carolina.rr.comh> Recipient address rejected: User does not exist. X-Actual-Recipient: RFC822; <Ksmith29@carolina.rr.comh> ForwardedMessage.eml Subject: Test From: Kevin Smith new <ksmith29@carolina.rr.com> Date: 4/6/2026, 4:43 PM To: ksmith29@carolina.rr.com Attachments: ForwardedMessage.eml 2.7 KB

Notice the h it puts in after my rr email address Thank you, Kevin

I got these instructions from Charter. How to set up Spectrum Email on third-party clients Dear Spectrum customer, Here's some helpful info you may find useful after our conversation. You can easily set up Spectrum Email on your cell phone, laptop or other mobile devices. To get started, make sure you have the following settings: Username: Your full Spectrum email address Password: Your Spectrum email password SSL: On Protocol: IMAP Incoming Server Port: 993 Outgoing Server Port: 587 Requires Authentication: Yes, or checked You'll also need to enter your incoming email server and outgoing email server. The server that allows you to send mail is the outgoing or SMTP server. The server that lets you receive mail is referred to as an incoming, POP or Mail server. Those will vary based on your domain, which is the part of your email address that follows the @ symbol, such as charter.net. The problem is with connection security. The only 3 choices you offer are none, start tls or ssl/tls If you add a choice of just ssl my roadrunner email will work just fine. This is what senders see when they try to send me an email Subject: Mail System Error - Returned Mail with Subject: Test From: Mail Administrator <Postmaster@msg.pkvw.co.charter.net> Date: 4/7/2026, 10:36 AM To: ksmith29@carolina.rr.com This Message was undeliverable due to the following reason: Each of the following recipients was rejected by a remote mail server. The reasons given by the server are included to help you determine why each recipient was rejected. Recipient: <Ksmith29@carolina.rr.comh> Reason: 5.1.1 <ksmith29@carolina.rr.comh> Recipient address rejected: User does not exist. Please reply to <Postmaster@msg.pkvw.co.charter.net> if you feel this message to be in error. Reporting-MTA: dns; p-mtain018.msg.pkvw.co.charter.net Arrival-Date: Tue, 7 Apr 2026 14:36:37 +0000 Received-From-MTA: dns; p-impin025.msg.pkvw.co.charter.net (47.43.26.180) Original-Recipient: RFC822;<ksmith29@carolina.rr.com> Final-Recipient: RFC822; <ksmith29@carolina.rr.com> Action: failed Status: 5.1.1 Remote-MTA: dns; mail-twc-com.msg.pkvw.co.charter.net (47.43.26.4) Diagnostic-Code: smtp; 550 5.1.1 <ksmith29@carolina.rr.comh> Recipient address rejected: User does not exist. X-Actual-Recipient: RFC822; <Ksmith29@carolina.rr.comh> ForwardedMessage.eml Subject: Test From: Kevin Smith new <ksmith29@carolina.rr.com> Date: 4/6/2026, 4:43 PM To: ksmith29@carolina.rr.com Attachments: ForwardedMessage.eml 2.7 KB Notice the h it puts in after my rr email address Thank you, Kevin
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Platform34
Platform34
  • Top 25 Contributor

Q1) The problem is with connection security. The only 3 choices you offer are none, start tls or ssl/tls. If you add a choice of just ssl my roadrunner email will work just fine.

You seem to be using the wrong encryption protocol for the port number given.

Port 587 is the standard SMTP port used with StartTLS, not SSL/TSL. The later uses port 465. Have you tried using StartTLS?

Q2) In reference to the appended h, my guess is that the badly formatted email address was copy/pasted into the recipient To: field. Has the sender retried using a typed in email address?

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