> Im sorry if this is a repeated question, i'm afraid that I did not have
> much success searching the site for this answer.
>
> I have been using Pegasus version 4.31 for obviously quite some time
> with an alltel.net email address. Recently alltel converted their
> addresses to windstream.net. I have gone in and made what I thought
> were the correct changes and can recive my emails but cannot send
> emails. This is the error message I have received...I would appreciate
> any help and am sorry if I ommited any necessary details for this
> issue.
>
> Delivery has failed on the enclosed message for the following
>
> reasons reported either by the mail delivery system on the mail
>
> relay host or by the local TCP/IP transport module:
>
> 553 Authentication is required to send mail as
>
> <ffitch@windstream.net>
David Harris has implemented ESMTP AUTH CRAM-MD5 for WinPMail. It does a SMTP authentication in accordance with RFCs 2554 and 2195. It will also do the LOGIN and the strange MS AUTH=LOGIN.
Go to Tools | Internet options | (Sending) SMTP, edit the SMTP configuration, select the "Security" tab and then select the SMTP Authorization option as specified by your ISP. Most require the the second or third SMTP Authorization option