Ole Wolf wrote: >> Of course, if the bug you're reporting is the lack of detail in the >> error message sent back to Thunderbird, then yes, we could probably >> include more information somehow. > > I think this would be necessary if tmda-ofmipd were to validate the email. > > I'd recommend against that, however. The generalization of your > statement that tmda-ofmipd should perform validation is that > tmda-ofmipd should perform validation on more than just this > particular kind of problems.
One note on this - tmda-ofmipd isn't "validating" the mail simply for the purpose of enforcing some rules it thinks emails should follow. Rather, tmda-ofmipd must correctly parse the mail, so that any "to", "from", etc. statements in the user's outgoing filter can be correctly implemented. As such, any parsing errors prevent the outgoing filter from running, and have to be immediately reported back to the mail client as a failure. Also, at least for the specific issue you saw, I suspect that at least some MTAs would do the same. I know for sure that my postfix setup validates local recipients at SMTP reception time, and refuses to even accept messages sent to non-existent local users (as opposed to accepting it, and generating a bounce response). So, even if Thunderbird was talking directly to a "real" SMTP server, you could easily see the same issue.
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