Hello Darin, Wednesday, December 8, 2004, 11:29:57 AM, you wrote:
DC> Hi Charles, DC> When your dial-up users do send through your SMTP server, do they have to DC> authenticate? Or do you use that SMTP only for your dial-up users, with no DC> non-dialup users having access to it? I would suggest one or the other. In DC> either case, you can then easily see from a report on your mail server logs DC> what the incoming and outgoing traffic is. DC> As far as allowing SMTP traffic to other servers for your dial-up users, you DC> might consider blocking port 25 except to your mail servers as some other DC> ISPs are doing. Since alternate ports, preferably SMTP AUTH, should be DC> available with the alternate mail provider, blocking should not be a huge DC> issue...however, I realize it will take some time to educate and prepare DC> your end-users for the change. It's should be extremely inexpensive to DC> throw up some SMTP servers for dial-up users only to relay through. DC> Darin. I do block port 25 on my dial users, but the ones dialing into the wholesale dial pools are *NOT* under my control. They are provided as a service from another company, and under their models it is not a good idea to block port 25 (They have multiple ISP's as subscribers). They do have to auth to use my server, since I treat them as foreign IP's (I have no idea what IP's they may come from). They do not, however, have to send through my mail server. -- Best regards, Charles mailto:[EMAIL PROTECTED] To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
