Unable to send because of 'invalid return path'

[matthewblott]

As the title says and the screenshot below shows, when I press 'y' to send I receive an error. I am using ProtonBridge which did cause me some issues setting up but I am able to login and view my email so I'm not sure that is the issue. I do not have any attachments - this was just a test email. I have tried a few times and the result is always the same. Any help appreciated :-)

[flatcap]

Hmm... that message has come from the server.
Your From isn't a ProtonMail address, perhaps it's complaining about that.

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I don't use ProtonMail myself, but others do.
We'll see if they know

[elshize]

I tested using my proton account, and I also get an error when From address doesn't match the proton address: https://0x0.st/H0V7.png

@matthewblott Try modifying it before sending. If it helps, you can set the from email for your account with set from = "your-address"

[matthewblott]

Thanks @elshize putting the 'from' address in the config did the trick, ProtonBridge isn't the easiest to work with. I also get prompted for my password each time I open neomutt which is a bit of a pain. I've seen others with the same problem, is there any way round this?

Thanks again 🙂

[elshize]

Are you using native imap setup as described here? https://neomutt.org/test-doc/bestpractice/nativimap

I think if you set password for both imap and smtp, it shouldn't prompt you for it. Not sure if there is any more secure way than a plaintext pass.

I myself use a maildir accound with mbsync handling imap, and msmtp to send emails, and both of those have password commands to potentially retrieve passwords from, say, a password manager or something.

[matthewblott]

@elshize I didn't know about imap_user and imap_pass, I just had my_user and my_pass set. I'm not too worried about the plain text password as it's the one for the bridge. My Macbook is also encrypted so I should be save (assumptions!). I'm all good now I think. Cheers 🙂

[elshize]

Glad you made it work.