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List:       kdepim-users
Subject:    Re: Return receipts
From:       Ingo =?ISO-8859-1?Q?Kl=F6cker?= <kloecker () kde ! org>
Date:       2022-04-11 12:07:13
Message-ID: 5815199.lOV4Wx5bFT () daneel
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On Montag, 11. April 2022 13:23:52 CEST Ian Douglas wrote:
> Hi
> 
> Kmail etc updated over the weekend.
> 
> Now when I try to send a mail with return-receipt flags, I get:
> 
> Failed to transport message. Server error: <webmaster@XXXX.com>
> NOTIFY=success,failure: malformed address: NOTIFY=success,failure may not
> follow <webmaster@XXXX.com>
> 
> Is this me or my ISP's mail server?
> 
> Kmail Version 5.19.3 (21.12.3)

Looks like a bug (regression) in KMail introduced with the fix for
https://bugs.kde.org/show_bug.cgi?id=442884.

I think the fix doesn't check whether the server actually supports the 
"Delivery Status Notification" SMTP service extension.

One could also argue that a decent mail server should support DSN by now (the 
standard was published in 2003). Still, KMail should always check what the 
server it talks to supports.

Regards,
Ingo

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