Marc, with your POP 3 account, do all clients use the same SMTP server for outgoing messages? If so, it would be easier to setup a SMTP connector in your Exchange server for Internet mail delivery. If you can configure a SMTP connector and point it to your Internet SMTP server, your POP3 clients can use the Exchange server as the outgoing SMTP server. This way both Exchange MAPI and POP3/SMTP will use the same outgoing transport. Incoming will be still using the external POP3 server. What is happening is, when the user composes and sends a message to an external recipient, the user is using the Exchange server as the default transport. Why do you have two different addresses fro the same users such as user@xxxxxxxxxxx and user@xxxxxxxxxxxxxx You can use the same address user@xxxxxxxxxxx for both internal and external mails. If your user accounts are configured to use multiple SMTP addresses as you have, you need to check the default reply address is set to a valid address (user@xxxxxxxxxxx), in this case I assume your maltats.com domain is registered for Internet mails. Regards, Raj -----Original Message----- From: Marc [mailto:marc@xxxxxxxxxxxxxxx] Sent: Thursday, January 16, 2003 2:38 PM To: [ExchangeList] Subject: [exchangelist] Exchange HELP NEEDED Please! http://www.MSExchange.org/ I am running a Server with Windows 2000 Small Business Server which includees exchange 2000. The server is hosting INTERNAL email for 20 users. The server is NOT live on the internet and is not hosting External Email or a web Site. The Client machines (running Windows 2000 Pro) have Outlook 200 installed and are set using an exchange mailbox. In the same outlook profile i have also set a pop3 mail account for external email. Internet is accessed through an adsl router connected to the 24port cisco switch. The Internal and external mail both work fine. but sometimes and it can be quite frequent when a mail is sent from outlook to an external address an error message is returned from the exchange server staing that the message could not be delivered. This does not always happen .... it seems that sometimes the mail goes through the the exchange account set up on outlook. I have tried to seperate the pop3 and the exchange account.. in 2 different outlook profiles and that seemed to have solved the problem but it is quite cumbersome for the user to have to switch profiles between internal and external accounts. Is there anything i can do to solve the problem .? The External email addresses of the users is <username>@maltats.com whilst the internal address is <username>@maltats.local Also for some strtange reason when sending an external email the recieving end recieves the email but he tries to reply to it the address comes up as @maltats.local which obviously results in an error sincec he can not send to the local address from an external site. Please help anyone .? Thanks Marc ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: psraj@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')