The first 5.7.1 is the error LISTSERV saw (i.e. the reason LISTSERV 
recognized it as a bounce).  Everything after that is just the 
verbose text of the error message, for human reference purposes.

Nathan

At 03:47 PM 4/6/2006 -0400, Bill Brown wrote:
>"LISTSERV site administrators' forum" <[log in to unmask]>
>wrote on 04/06/2006 03:09:37 PM:
>
> > Hi, I'm parsing .changlog file to get bounced adresse with the code and
>I
> > just wondering something in the structure of these file.
> >
> > 20060405133420 BOUNCE [log in to unmask] 5.7.1 550 5.7.1 No such user
> > 66si618564wra
> >
> > Structure : Date/Time bounce EmailAddress  5.7.1(what is that number)
>550
> > (Bounce Error Code) 5.7.1  Bounce Description
> >
> > Did I understand that structure correctly I mean for the 550 ?
>
>
>Normally the 550 comes before the 5.7.1.  The later is an enhanced error
>code.  Look at RFC 1893 http://www.ietf.org/rfc/rfc1893.txt?number=1893