Have them use SMTP AUTH from their clients and if they have servers that need to send SMTP messages, those should have static IPs which you can then enter into the "relay for addresses" list.
Todd -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Bubba Smith Sent: Wednesday, November 14, 2001 12:21 PM To: [EMAIL PROTECTED] Subject: RE: [IMail Forum] SMTP Relay. What can we do better. What about our customers ? Do I then have to put in each of their IPaddresses from where they will be coming from ? Some of them use DHCP from their ISP or cable service. Thank you for your reply. B. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Rod Dorman Sent: Wednesday, November 14, 2001 9:11 AM To: [EMAIL PROTECTED] Subject: RE: [IMail Forum] SMTP Relay. What can we do better. Bubba Smith wrote: > ... > Last week, a person was able to relay 300,000 emails through our Imail > server. Our current relay is setup for USERS only. The person was able to > relay mail through our system by changing his computer name to a domain name > in IMail, and creating an email account on his computer the same as an email > account in one of our Imail domains. Since IMail was setup for RELAY FOR > USERS ONLY, everything worked correctly. A prime example of why 'Relay for local users only' is a bad choice. > Even if we had setup IMail relay > for HOSTS ONLY, the same thing would have occurred. We tried the NO RELAY > option, but unfortunately, since the accept.txt file does not work for NO > RELAY, none of our emails from WhatsUP Gold could be sent, and some of our > third party applications like FrontPage etc... cannot use SMTP > Authentication. > > It would be nice if the ACCEPT.TXT file would worked for NO RELAY but it > doesn't. Accept.txt only works for HOSTS and USERS only. If accept.txt > did work for NO RELAY, we could put the IP addresses of our internal systems > in this file, and all users would then be required to use SMTP > Authentication. Problem Solved. So use 'Relay mail for Addresses' and enter the subnet or individual addresses your internal systems are on. -- [EMAIL PROTECTED] "The avalanche has already started, it is too Rod Dorman late for the pebbles to vote." � Ambassador Kosh Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
