On Fri, 17 Feb 2006, CLEMENT Francis wrote:

>
> Hello Davide and list
>
> I don't know if i reported this problem before so excuse me if allready
> done.
>
> On my xmail 1.22 (w2k sp4 win32 platform) I noticed the following symptom :
>
> When a mail is send to an external 'TO' address (not handled by xmail) and
> the 'TO' address is syntaxicaly bad in the domain part (special characters
> like quote, see sample slog bellow) xmail retries and retries, until
> reaching last retry and finaly  send back a NDR report !
> Why xmail, on 'bad domain names', retries (no resolvable at all, my win32
> nslookup says "command syntax error")?
> This is a big problem for our customers as they don't receive a NDR
> immediately after first try (like previously with xmail 1.17, never used
> 1.18/1.9/1.20/1.21). They know only the error after several hours/days
> (depending of xmail retries patterns used)
>
> Seems xmail don't really check syntaxicaly the domain part of the 'TO'
> addresses !?!?
> Notice that I don't use the 'smartdnshost' setting, so xmail use its own
> resolver from begining to end of domain dns mx resolution. So even if xmail
> don't check the syntax, the xmail dns resolver should return at least a 'no
> existing domain' or 'bad request' and then the smail module should stop
> immediatly, no ?
> (I don't know own xmail handle the dns responses and what is the exact dns
> response in this case ...)
>
> Any other guys having this problem ?
> Any ideas Davide ?

While anal address checking is planned for the next release, the friggin 
MUA should fscking check that too, no? It can provide a better UI to the 
user instead of a cryptic SMTP response, no?



- Davide

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