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Problems between Thunderbird and Mediacom Connections Refused

Thunderbird Connectivity
christ1 replied
Judo
Judo

The issue has been "An error occurred connecting to mail.mediacombb.net:993." on the server page, where you can "test connection to server" in Account > Server Settings > Security Settings. I get the same error message for each four different accounts. I have no problems with the other two different accounts not associated with Mediacom (MC). I contacted MC and they said my settings were correct and to contact TB. I have read several posts with no real solutions except that was resolved through an update. I plan to switch to a different Linux distro later. I am currently using Big Linux Manjaro with the latest update. Note that I had no problems with TB until last month. I do not do the uninstall/reinstall apps unless it will resolve my issues as a last resort. Second, sometimes I receive MC e-mails and did not run the "test connection to server," then until today while troubleshooting for several hours. I was trying to send out an e-mail, which I had no problems last week. I already went to Account > Server Settings > Advanced and changed the "Maximum number of server connections to cache" from 5 down to 1 with no luck. 

  The e-mail server settings are:

imap.mediacombb.net 993 SSL/TLS Normal Password and smtp.mediacombb.net 587 STARTTLS Normal Password They have not been changed since I switched from windows 10 to Zorin 18 to currently Big Linux Manjaro. I attempted to locate a method to check if the server settings were correct via Terminal. M$ Outlook has a test page that you can send to yourself or another e-mail account. Last, MC tech informed me that M$ Outlook is more friendly than TB. I know that I have used M$ Outlook for years and rarely had any connection issues unlike TB. Unlike Evolution, which was my first after M$ Outlook, TB is much better and easier than Evolution. Thank you in advance for your time and advice.

The issue has been "'''An error occurred connecting to mail.mediacombb.net:993'''." on the server page, where you can "test connection to server" in ''Account > Server Settings > Security Settings.'' I get the same error message for each four different accounts. I have no problems with the other two different accounts not associated with Mediacom (MC). I contacted MC and they said my settings were correct and to contact TB. I have read several posts with no real solutions except that was resolved through an update. I plan to switch to a different Linux distro later. I am currently using Big Linux Manjaro with the latest update. Note that I had no problems with TB until last month. I do not do the uninstall/reinstall apps unless it will resolve my issues as a last resort. Second, sometimes I receive MC e-mails and did not run the "test connection to server," then until today while troubleshooting for several hours. I was trying to send out an e-mail, which I had no problems last week. I already went to Account > Server Settings > Advanced and changed the "Maximum number of server connections to cache" from 5 down to 1 with no luck. The e-mail server settings are: '''imap.mediacombb.net 993 SSL/TLS Normal Password''' and '''smtp.mediacombb.net 587 STARTTLS Normal Password''' They have not been changed since I switched from windows 10 to Zorin 18 to currently Big Linux Manjaro. I attempted to locate a method to check if the server settings were correct via Terminal. M$ Outlook has a test page that you can send to yourself or another e-mail account. Last, MC tech informed me that M$ Outlook is more friendly than TB. I know that I have used M$ Outlook for years and rarely had any connection issues unlike TB. Unlike Evolution, which was my first after M$ Outlook, TB is much better and easier than Evolution. Thank you in advance for your time and advice.

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All Replies (1)

christ1
christ1
  • Top 25 saradnika
  • Moderator

You do get an error for mail.mediacombb.net. However, your server settings use imap.mediacombb.net, and smtp.mediacombb.net respectively. So obviously there is a mismatch, which may be part of the problem. I don't know which server name is correct, you'll have to check with MC.

Beyond that, the certificate for imap.mediacombb.net is a mess. It uses outdated TLS versions, and is vulnerable to certain attacks. See https://www.ssllabs.com/ssltest/analyze.html?d=mail.mediacombb.net

Thunderbird does not accept TLS 1.0 or TLS 1.1 by default. Starting with Thunderbird version 78, support for TLS 1.0 and 1.1 was deprecated and disabled for security reasons, making TLS 1.2 the minimum required version.

If I were you I'd find a new email provider who know what they are doing.

MC tech informed me that M$ Outlook is more friendly than TB.

That somehow fits into the picture. As opposed to Outlook, Thunderbird is more strict in enforcing security. Outlook prioritizes convenience over security, so it potentially puts you at risk. And so does MC it seems.

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