"Sender rejected"

[Thomas Spuhler]

On Sunday 18 February 2007 09:38, André Karlsson wrote:
> Hi
>
> I'll try to explain my issue in a better way than my last post
>
> Everytime I send a mail from a kolab account domainX to a kolab account
> domainY from an external relay it is rejected back with the error
> 450:sender rejected.
Depending on your antispam settings, your system may check if the sender 
accepts e-mail for the sender address and since it's a rely, it will not.


>
> Under the services tab (webgui tool) I don’t have any rules set, just one
> radio button I cant "uncheck" saying
>
> "Reject the message with the except if it originates from the outside but
> has a From header that matches the Kolab server's domain. In that case
> rewrite the From header so the recipient can see the potential forgery."
>
> But this is only options for the rules I haven’t checked.
Start without checking any thing and then add checks and see which one does 
create the problem.
>
> Current work around is to use another port and tunnel it locally to
> localhost:25 on the mail server, (ISP have port 25 blocked in some cases).
Especially hotels here.
>
> Btw mailing list doesn’t work with the external smtp relay either :(
>
> Best Regards André
>
>
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-- 
Thomas