500 Host server does not support 8bitmime
Blanco, Gustavo
Somebody know this error?
500 Host server does not support 8bitmime
i have Exchange 5.5 SP2 and one SMTP server as relay, and this error appears when somebody send mail with Netscape mail client....
I made a ehlo comand to port 25 on exchange and i cant`t find the 8BITMIME support...and i can`t find information about this...
somebody can help me?
THX!
GB
Rich Matheisen [MVP]
>Somebody know this error?
Yes. Someone insists that they MUST send the message to Exchange using
8bitmime format. The only problem is that Exchange doesn't advertise
that it supports that ESMTP keyword. So the sender returns a NDR
instead of converting the message to 7-bit MIME.
That SMTP relay wouldn't be running the Microsoft SMTP serice that
came with the NT4 Option Pack, would it?
Try this MS KB article:
Q198415 "XFOR: Disable 8-BIT MIME Support on NT Option Pack SMTP
Service"
------------------
Rich Matheisen
MCSE, Exchange MVP
MS Exchange FAQ at http://www.swinc.com/resource/exch_faq.htm
Pencho
the Q194815, but i don´t understan wath happend if i disable the 8 bit mime
support in the relay...the client receive a NDR or the client send the
message again in 7bit format? i have a litle confusion about it...
i see some messages processed for others smtp servers and i see things like
"autoconvert 8 bit mime to 7bit mime"...exchange support things like that?
i really apreciate your help with this...i have this problems in two
different clints..and i can´t find the solution...
THX!!
p.d: I REALLY SORRY FOR MY ENGLISH!
--
Saludos
Gustavo Blanco
MCSE
Consultoria Microsoft - ITS
Exchange Team
Rich Matheisen [MVP] <rich...@rmcons.com.NOSPAM.COM> escribió en el mensaje
de noticias 7imn7sc5ura91oqnu...@4ax.com...
Rich Matheisen [MVP]
>Yes, the SMTP server is the SMTP service that came with option pack...i try
>the Q194815, but i don´t understan wath happend if i disable the 8 bit mime
>support in the relay...the client receive a NDR or the client send the
>message again in 7bit format? i have a litle confusion about it...
What will happen is that things will begin to work properly. The
transmitting SMTP server will not send the message in 8bitmime to the
Microsoft SMTP service because the Microsoft SMTP service will no
longer advertise that it is able to handle that message format.
The problem lies in the Microsoft SMTP service. It's not a full
featured SMTP server. The server advertises that it can accept
8bitmime format (which it can), so the other server sends it a message
in that format. But when the Microsoft SMTP service tries to send the
message to the Exchange server it finds that Exchange cannot accept
the message in that format. At that point it sends a NDR back to the
originator instead of converting the message to an acceptable (7-bit)
format.
BTW, this is an acceptable behavior according to the RFC's. I just
think it was the lazy way to do it.
>i see some messages processed for others smtp servers and i see things like
>"autoconvert 8 bit mime to 7bit mime"...exchange support things like that?
No, Exchange does not support 8bitmime at all.
>i really apreciate your help with this...i have this problems in two
>different clints..and i can´t find the solution...
You DID find the solution -- follow the MS KB article's instructions
and your problem will disappear.