could not find envelope sender user

Levi Wheatcroft levi at
Mon Aug 19 03:56:09 CEST 2013

Having some drama with alternate addresses, and getting the error "could
not find envelope sender user" when trying to send from an alternate

There was a post about something similar an hour or so ago:

but that doesn't seem like the same issue, as I have no
"receive_override_options" line in my /etc/postfix/

A few other posts in the archive mentioning this issue say that you need to
add these addresses as alternate or external addresses in kolab web abmin,
but I have done that and it doesn't seem to work.

This post:

says something about /etc/postfix/ldap/ but I don't really
understand what the proposed solution was - I think just adding the
external address.

So I don't know how to investigate this problem further, any help would be
much appreciated.
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