[Tickets #15151] Some Emails could not be answered via EAS from IOS Mailapp

[noreply at bugs.horde.org]

BITTE NICHT AUF DIESE NACHRICHT ANTWORTEN. NACHRICHTEN AN DIESE  
E-MAIL-ADRESSE WERDEN NICHT GELESEN.

Ticket-URL: https://bugs.horde.org/ticket/15151
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  Ticket           | 15151
  Erstellt Von     | Klaus.Steinberger at lmu.de
  Zusammenfassung  | Some Emails could not be answered via EAS from IOS
                   | Mailapp
  Warteschlange    | IMP
  Version          | 6.2.27
  Typ              | Bug
  Status           | Unconfirmed
  Priorität        | 2. Medium
  Milestone        |
  Patch            |
  Zuständige       |
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Klaus.Steinberger at lmu.de (2023-09-25 08:13) hat geschrieben:

In some case Emails coming for a Exchange Server could not be  
answered. The reason is probably a different way how IOS Mail App uses  
the display part of Email adresses with UTF8 characters.

In such a case horde seems to cut off part of the Email adress so it  
is not deliverable.

Sep 22 15:19:26 mail postfix/smtpd[13397]: NOQUEUE: reject: RCPT from  
dmz-sv-webmail.physik.uni-muenchen.de[2001:4ca0:4102:0:192:54:42:223]:  
450 4.7.1 <=?utf-8?Q?"=C3=87oban>: Recipient address rejected: Access  
denied; from=<robert.redl at physik.uni-muenchen.de>  
to=<=?utf-8?Q?"=C3=87oban> proto=ESMTP  
helo=<dmz-sv-webmail.physik.uni-muenchen.de>

The Real Adress of the Recipient is "Çoban, Atakan" <Atakan.Coban at lmu.de>

so the EAS code in webmail probably bugs out on "=?utf-8?Q?"=C3=87"