Eric Johnson wrote: > Hi all, > > Somewhat off-topic, but did something change at SourceForge, and is > there anything I can do about it? Specifically any email to this list > from my original registered email address is now getting bounced. The > error message is: > > > 550-Response: 553 sorry, mail to that recipient is not accepted (#5.7.1) > 550-Several RFCs state that you are required to have a postmaster > 550-mailbox for each mail domain. This host does not accept mail > 550-from domains whose servers reject the postmaster address. > > 550 Sender verify failed > > > > My domain, email, etc. is all handled by GoDaddy, so I don't think I > have the means change that. I re-registered through my Hotmail account, > but it is not nearly as convenient. Is there a work around, other than > what I have already done or anything else that can be done? Whenever a mail transfer agent (a program running on a hopefully trusted server at your ISP) attempts to send a mail message to another mail transfer agent or a mail server, it is usually requested to authenticate itself. What that does is require the sending MTA to respond to a message sent to it. If it does, then it is pretty clear it really is at the IP address it says it is at, and the IP addr hasn't been forged. Either SourceForge's mail server was not, until recently, requiring authentication, or now GoDaddy's MTA is requiring you to set up something before they will authenticate outgoing mail on your behalf.
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