Those tips are great, thanks very much Nik
-----Original Message----- From: Ed Crowley [mailto:[EMAIL PROTECTED]] Sent: 01 November 2001 01:44 To: Exchange Discussions Subject: RE: Disabling Mail Relay Another solution would be to install a second IMS in your site and configure that one to allow relay. Hide it from the Internet but let your internal users see it. Ed Crowley MCSE+Internet MVP Tech Consultant Compaq Computer Corporation (soon to be HP) All your base are belong to us. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Soysal, Serdar Sent: Wednesday, October 31, 2001 10:10 AM To: Exchange Discussions Subject: RE: Disabling Mail Relay Your POP3 clients use SMTP to send their mail. It's during this process that they run into the 550 error. Try reconfiguring their mail clients so that they are aware that the SMTP server requires authentication (I believe this is a checkbox in Outlook and Outlook Express). Serdar. -----Original Message----- From: Niki Blowfield [mailto:[EMAIL PROTECTED]] Sent: Wednesday, October 31, 2001 6:00 AM To: Exchange Discussions Subject: Disabling Mail Relay Dear All, We have started getting some low life relaying hundreds of 'questionable' mails thru our Exchange Server. I've set routing restrictions so that only authenticated users can route mail, and this stops it fine. However, we have 5 remote sites, 4 of which have local Exchange Servers within the overall organisation which work fine, but we have 1 single site connected by dial-up (for 2 more weeks, then ADSL like other sites) whose clients use POP3. They stop being able to send and receive mail when I have this restriction in place. '550 routing disabled' or something similar. Our mail server which has the IMC installed is on a private subnet, with all mail traffic forwarded from the Firewall to it. The only other routing restriction I can configure is the 'clients that connect to this address' which I assume I can set to the LAN IP of the Exchange Server, however, will this stop the external relaying seeing as traffic from externally is forwarded to this private LAN Address? The way I read it is that this is designed for when you have an interface connected directly to the web, and 1 to then LAN, which obviously we don't have. Any help appreciated NB _________________________________________________________________ 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] _________________________________________________________________ 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]
