[sylpheed:36645] sylpheed is broken

[szukw000]

About 3 weeks ago sylpheed broke. I use version 3.6.0 . The error 
message is:

Error occurred while sending the message:
501 5.5.2 <?none?>: Helo command rejected: Invalid name

sylpheed
(none): unknown host.
gethostbyname: Success

(sylpheed:2919): LibSylph-WARNING **: [08:23:43] error occurred on SMTP 
session

(sylpheed:2919): Sylpheed-WARNING **: send: error: 501 5.5.2 <?none?>: 
Helo command rejected: Invalid name

(sylpheed:2919): LibSylph-WARNING **: [08:23:43] Error occurred while 
sending the message.

console.error: PushService:
   stateChangeProcessEnqueue: Error transitioning state
   UnknownError
console.error: PushService:
   stateChangeProcessEnqueue: Error transitioning state
   UnknownError

I tried to use Thunderbird. It works. I use it now.

winfried