I got a little bit weird Problem. One of my Mailboxes won't send any emails outside of my server. The other ones work completly fine. I hope some of u guys can help me. Error log: pastebin dot com/raw/ByjJML76 My main.cf: pastebin dot com/raw/F0vkG18L
First off all thanks for the answer, but how can that be that i'm not authenticated when i'm logged in in Thunderbird. If i try to send an email to my own network (another mailbox account on that server) it works just fine. Idk.
https://support.mozilla.org/en-US/kb/cannot-send-messages It works because your server is the destination for those emails; you can send to them unauthenticated, just like every other server on the internet can send mail from other domains unauthenticated. To send to an address not hosted on your server, a.k.a. to relay mail, you have to authenticate to the server.
Thank you so much @Jesse Norell. I thought my Server was missconfigured, but Thunderbird saved the old smtp settings even though i deleted the Profile. Now everything works fine
