[imp] Redirect not working

[Hanns Mattes]

Hi,

in my setup with recent versions of horde/imp redirect isn't
working. Imp is reporting:

,----[ Imp error message ]
| Failed to set sender: My Name <user at example.com> [SMTP: Invalid
| response code received from server (code: 501, response: 5.1.7 Bad
| sender address syntax)]
`----

The corresponding entry in postfix-log:

,----[ Postfix-Log ]
| Nov 14 00:47:32 mail smtp_in_smtp/smtpd[22725]: warning: Illegal
| address syntax from smtp.bruecko.de[88.198.91.238] in MAIL command:
| <My Name <user at example.com>>
`----

For my understanding the double angle brackets are incorrect.

Is this a configuration-error with my installation?

Any help appreciated.

Regards Hanns