I have posted this in two forums, not knowing which will get me the answer. I have an account with optimum.net I no longer receive Thunderbird emails since 9-02-24 about 10 AM EST. I talked to the "Head" tech at Optimum and he '''constantly assured me that the problem was with Thunderbird''', not Optimum. I do not receive emails from optimum (suddenlink,net) or yahoo.com. '''But I can send email, through Thunderbird to each'''. I have to look on the web to see the emails, since Tbird does not receive. I have changed no passwords. I think that Bird only uses the server on suddenlink, my primary ISP The head tech at optimum says it it not there problem. Could someone tell me the answer? John Addis jaddis@suddenlink.net John.Addis@Yahoo.com