Inability to send emails from my cox.net account using Thuderbird
I use both Thunderbird and Outlook for my cox.net email account. I can receive incoming emails using Thunderbird but cannot send emails, and I can both receive and send emails using Outlook. The server settings are identical for both Thunderbird and Outlook - imap with STARTTLS and port 993 and smtp with STARTTLS and port 587. When Thunderbird is unable to send an email, I get a balloon that indicates that the smtp server cannot recognize my email address, which is email@example.com.
Please post settings for your Cox SMTP server. That may help.Read this answer in context 👍 0
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Please post settings for your Cox SMTP server. That may help.