[Users] SMTP error with GMX

[Jeremy Nicoll]

On Thu, 19 Aug 2021, at 17:28, wwp wrote:
> Hello, 
> On Thu, 19 Aug 2021 15:57:25 +0000 sargon102 at gmail.com wrote:
> 
> > I'm using claws with GMX on Slackware linux. Version 3.17.8. I am
> > unable to send emails. I get a 550 error. Sender address is not allowed.
> > 
> > I use the same server settings with Vivaldi mail and have no problems.
> 
> Sending with the GMX SMTP works here :-/.

Surely a 550 isn't a problem with the sending server, but a problem 
with the intended receiving server not recognising the mailbox or
user that a message is being addressed to?

-- 
Jeremy Nicoll - my opinions are my own.