I am having some smtp issues that I hope someone can help me solve.
I have an Earthlink account and used the smtp settings for Earthlink - smtpauth.earthlink.net for sending emails without a problem. I have used this setting on my trips to other countries and it has worked like a charm - never have had to change the smtp settings.
Since yesterday, I have been using sonic.net and I cannot send emails anymore. I get an error 421 cannot connect to smtp server. I spoke with Earthlink today and they have not changed anything so it is really not their issue because the only thing that has changed in my ISP - sonic.net.
By the way, if I use mail.sonic.net as my smtp, I can send emails. But I would really like to use the earthlink smtp settings and use sonic.net or whatever other ISP I happen to be using without any problems, and without having to change smtp settings.
I use Eudora, I have tried everything - allow authentication, Use submission port (587), all configurations of Secure sockets while sending.... nothing works.