email forwarding does not work when it is to a recipient with encryption turned on

[eleith]

Behaviour

Steps to reproduce this issue

1. create a recipient
2. turn on encryption for that recipient
3. assign an alias to that recipient
4. send email to the alias

Expected behaviour

an encrypted email should be forwarded to the recipient

Actual behaviour

the email is never forwarded, laravel logs shows the following error

Connection to 127.0.0.1:25 Timed Out (code: 0) {"exception":"[object] (Swift_TransportException(code: 0): Connection to 127.0.0.1:25 Timed Out

Configuration

running 0.8.10 and emails to non-encrypted aliases do forward properly. i followed gpg instructions

i would have guessed the errors would be related to pgp and signing but nothing stands out yet. the timeout indicates there is an smtp error though postfix logs just say the email was deferred with no exact error.

is there a set of debug steps i can take to ensure gpg works locally? any other logs i can look at?

[eleith]

docs have more information on how to set up gpg (https://anonaddy.com/self-hosting/) in particular, do not set a passphrase on the key and copy the fingerprint to ANONADDY_SIGNING_KEY_FINGERPRINT= and then running php artisan config:cache afterwards