You need to set "allow relay to authenticated users" at the server end, then have each client send username\password when sending (a setting within Oexpress)
Yours, Julian Stone -----Original Message----- From: Bravo, Liliana [mailto:[EMAIL PROTECTED]] Sent: 10 April 2002 17:16 pm To: Exchange Discussions Subject: Outlook express clients and MSX2000/SMTP Importance: High MSX2000+SP2 After migrating to MSX2000 our Outlookexpress clients (no fix ips because are dial-up laptops) get the following "mail delivery failure" when trying to send a message: Sent >>> RCPT TO: <[EMAIL PROTECTED]> Received <<< 550 5.7.1 Unable to relay for [EMAIL PROTECTED] Could not deliver mail to this user. Is like the SMTP server does not want to deliver messages to valid users (these users belong to that server) Note: The from/return address of the sender is valid. The only workaround I found is to go to the SMTP connector properties and then to ACCESS then RELAY and switch from "only the list below" to "All except the list below" (list in all cases is blank because does not allow to specify mailboxes but ips and our clients do not have fix ips) but is this not opening our server to be use for relay to the whole world? what can we do to allow only the mailboxes ina that server to use the SMTP server? -thanks, _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
