Error 550 Mailbox Unavailable - emails still received
Original Resource URL: https://forums.yahoo.net/t5/Sending/Error-550-Mailbox-Unavailable-emails-still-received/td-p/406767 For the past week, when I try to send email from my Yahoo account, it only sends out the emails sporadically. Most of the time, they are not sent and I receive the error message: "550 Request failed; Mailbox unavailable'" I haven't changed anything at all in, well, forever. But, just to ensure nothing had changed on the Yahoo side, I double-checked all of my settings. Change font size in yahoo mail they is correct and match the settings Yahoo has supplied: Outgoing Mail (SMTP) Server Server - smtp.mail.yahoo.com Port - 465 or 587 Requires SSL - Yes Requires TLS - Yes (if available) Requires authentication - Yes Your login info Email address - Your full email address (**Username Protected**@domain.com.) Password - Your account's password. Requires authentication - Yes Yet t...