Disposable addresses and e-mail clients
I consider the disposable addresses to be one of the big plusses of my att.net e-mail addresses - when I start dealing with a new company online I usually create a disposable address to use with them, both so that if they give out my address widely (deliberately or because they got hacked) I can delete the address, and because it makes it very easy to filter my e-mail into appropriate folders. But with the new changes in e-mail security requiring sender authentication (which is a great idea if implemented properly), I now have problems sending e-mail from my e-mail client (a version of Thunderbird) using a disposable address. (I had no such problems until the last few months.) It seems that outbound.att.net does not recognize my disposable addresses as valid senders. I have the SMTP server settings for outbound.att.net set to use the main account for the authentication (since the disposable addresses are yahoo.com addresses, not att.net like the server and the main account, and even if possible, it would be a pain to create a whole new SMTP server setup for each disposable address). The only way to send mail from my disposable addresses seems to be using webmail, which I find much less efficient.
I would really like to see this fixed, i.e. set up the outbound server for e-mail so that it authenticates using the base address but recognizes the associated disposable addresses as valid senders using that one authentication. It seems the most reasonable way to do things - if fact, webmail works that way - it's just not how the SMTP implementation has been done so far. Are there any plans to fix this (I know it will take time even if the problem is addressed), and/or any simple work-arounds for now?