Mailing list error

For the last day I was complaining about that I could not post on the libdbook mailing list. I could not figure out why. But this morning it became clear to me. I had changed the default send-to in my gmail. The libdbook mailing list didn't know that mail and didn't let me post. DAAAAAA. It didn't help that the list didn't reply with "unknown email", it send a "list not found" error. So it is not that easy to change your email.