[Tickets #14518] Mails cannot be send: "Invalid e-mail address"

[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/14518
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  Ticket           | 14518
  Erstellt Von     | lehmann at ans-netz.de
  Zusammenfassung  | Mails cannot be send: "Invalid e-mail address"
  Warteschlange    | IMP
  Version          | 6.2.16
  Typ              | Bug
  Status           | Unconfirmed
  Priorität        | 3. High
  Milestone        |
  Patch            |
  Zuständige       |
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lehmann at ans-netz.de (2016-11-23 09:04) hat geschrieben:

When trying to send a mail, i can enter whatever recipient I want - I  
always get the message "Invalid e-mail address (<address>)." No metter  
what address I've entered.

I've already checked lib/Compose.php Function _prepSendMessageEncode  
where the error is raised.

The passed Horde_Mail_Rfc822_List looks like this:
http://pastebin.com/swfsQtax

I also tried to work around this manually to bypass the foreach loop with:
$out[] = $val->__get('bare_address');
continue;

This brought me a bit further, but now it failes outside the function  
with "Address is missing domain".

I've no idea what to do further here but as I said - I can no longer  
send any email.....