Fix SBCGLOBAL not sending emails in Thunderbird
An error occurred while sending mail through SBCGlobal. The mail server responded: Request failed; Mailbox unavailable. This time verify that your email address is correct in your account settings and try again. Email address has to be correct for both POP and SMTP settings. Sometimes SMTP info that was automatically set up by Thunderbird. The … Read more Fix SBCGLOBAL not sending emails in Thunderbird