[Users] Signatures don't seem to work

[mlist]

Andrej,

I have just tried from console with your key:

$ gpg2 --recv-keys 0x0F5A35751F6BF60F
gpg: key 0F5A35751F6BF60F: public key "Andrej Kacian <ticho at claws-mail.org>" imported
gpg: Total number processed: 1
gpg:               imported: 1

After that pressing 'C' in claws-mail results in:

Good signature from "Andrej Kacian <ticho at claws-mail.org>"

Why is this happening?
Also need I do this for each and every key?