https://bugs.kde.org/show_bug.cgi?id=435354
Petr Bláha <petrblaham...@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |petrblaham...@gmail.com --- Comment #1 from Petr Bláha <petrblaham...@gmail.com> --- I have same (smiliar issue) on KDE Neon (with all updates). Unsent mail in outbox are markes as: - "Failed to transport message. The remote host closed the connection" - or "Failed to transport message. Server error: 5.5.2 You are not welcome here." Thunderbird is working as wxpected. Our company mail support said, that kmail is sending data before smtp handshake ("Server send data before got greetings") -- You are receiving this mail because: You are watching all bug changes.