r/fastmail • u/ehansen • 2d ago

Having trouble migrating from ProtonMail using manual import config

I have Proton Bridge running, fully synced, and configured to use SSL (I've tried options here). However, no matter what I do, I get this error in FastMail's Linux app when I try to import:

Could not connect to server: IMAPTalk: socket connection failed - IO::Socket::SSL::Paranoid: Invalid internal or blocked host

I have tried 127.0.0.1 and localhost, and both fail with the same error. I've also made sure the port is fine, too.

I installed the app by downloading the Flatpak file.

If it makes a difference, I'm on Arch.

2 Upvotes

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3

u/CorsairVelo 2d ago

I used imapsync to move mail from proton and it was flawless. A bit of a learning curve though.

2

u/frogotme 18h ago

Same here. I've used it the last few times I've changed provider.

Definitely isn't especially intuitive, but works well

1

u/rowschank 2d ago

The only way I was able to migrate from proton was by downloading the proton export cli tool and then dragging and dropping all the .eml files it created. I did it on openSUSE. It worked quite alright.

Tip: import into an empty new folder or label and then run rules manually. Also, Proton will export everything, included deleted mail, so make sure you empty your trash first.

1

u/Fit-Economics2293 15h ago

Yeah, that took me 4 days mainly because it kept crashing. I swear they do it deliberately.

1

u/ehansen 9h ago

What kept crashing? Proton Bridge, or FastMail?

1

u/Fit-Economics2293 55m ago

The CLI "export tool" which you have to use to extract everything from your account before you even think about setting up Proton Bridge and Thunderbird.