don't want exchange to relyv to external mail

hi, i have 2 server,  server01  windows server 2003,  server02 is exchange server 2003

i read a couple thread but could not find any with my problem,   ok,  some of my user have 2 account , one on exchange  and one for external email with ISP.
my problem is , i just find out that all my user on exchange only (internel mail) are able to send outside to any external email.  i want to block that,  i look and could not find anything that work.

i want my user with POP3 account with ISP to be able to send external by their POP3 account of ISP not from exchange account.  the other problem that bring is when the user send with the exchange server  to outside, if  the recipient do a REPLY  it send to  myuser@mycie.local,  the mail bounce on is side, than they start to call and cry......

thanks  for any ideas

sly
adminslyAsked:
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adminslyAuthor Commented:
title:  don't want exchange to relay to external mail
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Network_Data_SupportCommented:
if you want to stop users from sending email from exchange to the outside world (Relaying)  then you have to set up the restrictions on the smtp virtual server, access tab and then relay.

dont let any subnet or user relay

http://www.petri.co.il/preventing_exchange_2000_2003_from_relaying.htm

that explains it
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Network_Data_SupportCommented:
i do think tho in an exchange enviroment with both exchange accounts and pop3 it will always default to the exchange account to send email
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adminslyAuthor Commented:
hi, i just try mostly everything in the  ptri.co  page  and  the exchange server still relay my outside mail

i try to select only anonymous and still relay my mail...

i really want my inside user to send mail only inside.

how ??
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adminslyAuthor Commented:
no solution for my problem,  

please  close and refund

thanks
sly
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Network_Data_SupportCommented:
then on the relay access bl9ock the users
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adminslyAuthor Commented:
network data support.....  where is the relay access ??
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Network_Data_SupportCommented:
go into the smtp virtual server and hit access tab,  on that tab there is a relay button, hit that.  in there you can block users that you do not want to allow relay ( send from inside out or outside outside)
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adminslyAuthor Commented:
in there i only have the ip of my main server(not the mail)
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adminslyAuthor Commented:
i mean (not the mail server)
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