[Dovecot] SSL / TLS Problem

[Leander S.]

  Am 23.07.10 02:59, schrieb Andrew Bruce:
> eel free to post this to the running conversation on the list (strip my
> email address from this email though please)
The issue was a case sensitive typo. When Setting up your Thunderbird 
don't type in eMail Addresses & Usernames including uppercase letters!

DON'T: User at Domain.tld
BUT therefore: user at domain.tld

I faced that Problem only when I was using dyndns as domain service 
provider.