I want to relay from my exchange server 2003 by an external SMTP server with SMTP-AUTH, its a debian server with qmail, we use the exchange server only to exchange internal mail and send mail to external, to get mail we use the external mail server.So, to get the External SMTP Server, I go in the mmc: Server >> domain >> protocol >> Smtp and then in the properties I put in receipt >> advanced the domain and in HOST I write the SMTP host, then in receipt >> protection I have activated the "Standard Auth" and I wrote the UID and PWd of the remote server, but if I am trying to send a mail by the exchange server through the external mail server, then it doesnt goes with 553 error, but by looking in the external mail server, it looks like that the exchange server dont auth on the external mail server. Can anyone please help.
Bookmarks