Can't send email on any of my apple devices.

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Level 1

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Can't send email on any of my apple devices.

I purchased a new imac and ipad pro and have added my email account to the mail app. I can get all my emails BUT CAN NOT SEND! I've deleted and re added the account several times to without success. I receive various error messages one being the smtp outgoing server does not recognize the mail account! The out going server name (mobile.charter.net) is correct! I've called Apple support and Spectrum and they have been unable to find a solution! Additionally I've rebooted my modem and router hoping it would solve the problem ... it did not!

Posted on Mar 19, 2024 2:09 PM

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Answer 1

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funbobb Author

Level 1

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Mar 23, 2024 7:56 AM in response to BDAqua

As it turned out there was a firewall set up on the imac! However, that was not the problem we not be able to send email! The problem was the Spectrum mail account password needed to be reset. Once that was done and the mail account on 3 devices were updated BOTH SEND AND RECEIVE WORKED! Cannot explain why I could receive mail with the original email but not send! I suspect it was something to do with the smtp outgoing server. The amount of time spent on this was ridiculous!

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Answer 2

BDAqua

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Mar 19, 2024 7:54 PM in response to funbobb

System Preferences>Network>choose interface>Advanced>Proxies Tab, make sure none are set, like for HTTP & HTTPS.

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Answer 3

BDAqua

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Mar 19, 2024 5:01 PM in response to funbobb

I assume you can login to www.spectrum.net, if they have WebMail there can you send from that?

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Answer 4

BDAqua

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Mar 19, 2024 3:35 PM in response to funbobb

Are you running any VPN, Anti-Virus, or Cleaning apps?

Are these the ports & protocols you're using, especially on the SMTP side?

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Answer 5

Tesserax

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158,562 points

Mar 19, 2024 10:16 PM in response to funbobb

One simple test that I use is to use the ncat command in the Terminal.

To test Charter's SMTP server, you would enter this command: ncat mobile.charter.net 587

A successful reply would start with: 220

FWIW, I just tried using this command with the iCloud SMTP servers and it was successful. However, when I tried the same test with the Charter SMTP server, I never got a response. This could mean, at least, three things:

mobile.charter.net is incorrect << Charter uses different servers for different domains.
Charter blocks ncat requests.
The Charter SMTP server is down.

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Answer 6

funbobb Author

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Mar 19, 2024 4:50 PM in response to funbobb

NO VPN, NO Anti-Virus or Cleaning apps! And, all the protocols are identical to what you have shown!

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Answer 7

funbobb Author

Level 1

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Mar 20, 2024 5:43 AM in response to Tesserax

I'll have to get to you on that command. I will add that I have used another apple device which has different charter email account installed and it receives and sends emails just fine AND it uses all the same exact account settings as the one that does not work!

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Answer 8

Tesserax

Level 10

158,562 points

Mar 20, 2024 8:08 AM in response to BDAqua

Pretty much any version since macOS High Sierra. However, I did forget to mention that "Command Line Tools for Xcode" will need to be installed to gain access to the ncat command. Sorry, about that. I was using one of my developer Macs.

FWIW, ncat was required to perform this test, since telnet was removed from macOS.

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