SMTP error from remote mail server after RCPT TO:<jw%leserini-muc at gmx.de>

[Matthias Apitz]

Hello,

This is perhaps not a problem with mutt itself, but maybe some expert can
lend me a light.

I'm member of a group and as this I do receive mails sent by others to the addr
jw%leserini-muc at gmx.de. But when I reply, the mail gets rejected, see
below. How is this possible that the originator can send this mail to jw%leserini-muc at gmx.de
but I can not?

Thanks

	matthias

----- Forwarded message from Mail Delivery System <Mailer-Daemon at sh4-5.1blu.de> -----

Date: Fri, 26 Oct 2018 14:51:58 +0200
From: Mail Delivery System <Mailer-Daemon at sh4-5.1blu.de>
To: guru at unixarea.de
Subject: Mail delivery failed: returning message to sender

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  jw%leserini-muc at gmx.de
    host 172.16.28.206 [172.16.28.206]
    SMTP error from remote mail server after RCPT TO:<jw%leserini-muc at gmx.de>:
    550 restricted characters in address

Reporting-MTA: dns; sh4-5.1blu.de

Action: failed
Final-Recipient: rfc822;jw%leserini-muc at gmx.de
Status: 5.0.0
Remote-MTA: dns; 172.16.28.206
Diagnostic-Code: smtp; 550 restricted characters in address

Date: Fri, 26 Oct 2018 14:51:57 +0200
From: Matthias Apitz <guru at unixarea.de>
To: ...
Cc: jw%leserini-muc at gmx.de
Subject: Re: Literaturmesse Nürnberg


Hallo,

wie ist denn die Rückfahrt geplant. Wir können doch nur alle zusammen
mit dem Bayernticket fahren...

Gruss

	matthias

-- 
Matthias Apitz, ✉ guru at unixarea.de, http://www.unixarea.de/ +49-176-38902045
Public GnuPG key: http://www.unixarea.de/key.pub
October, 7 -- The GDR was different: Peace instead of Bundeswehr and wars, Druschba
instead of Nazis, to live instead of to survive.


----- End forwarded message -----

-- 
Matthias Apitz, ✉ guru at unixarea.de, http://www.unixarea.de/ +49-176-38902045
Public GnuPG key: http://www.unixarea.de/key.pub
October, 7 -- The GDR was different: Peace instead of Bundeswehr and wars, Druschba
instead of Nazis, to live instead of to survive.
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