Your theory is absolutely correct. We implement our SMTP systems in the same way. We've got 3 boxes behind a DNS round robin. Tim. -----Original Message----- From: Andy Stewart [mailto:andystewart@comcast.net] Sent: Friday, May 21, 2004 8:53 AM To: Worcester Linux Users Group Subject: [Wlug] Comcast dolts (mail server problem?) HI all, In Kmail, when I configure the email sending parameters, I fill in "smtp.comcast.net" as instructed. In the security section, there's a selection for "check what the server supports". I do this and it returns "encryption TLS, authentication method CRAM-MD5". Well, it does this *most* of the time. Once in a while, it returns "encryption SSL". Keeping the above in mind, I periodically get errors when sending email. The error is "authentication failure". However, if I immediately resend, it goes through just fine (sometimes after repeated resends). Note also that smtp.comcast.net maps to 4 different IP addresses. My theory is that the Comcast servers are not all using the same authentication method, and when I catch one that's not setup the same as my email program, I don't authenticate and thus cannot send email. Does this theory seem reasonable? I tried to explain my theory to Comcast tech support who asked me to reboot Windows, and then complained about my unsupported email client. When I asked to speak to the system administrator for the email server, they refused. Comcast can't get into their heads that there might be an intelligent user or two using their service, and that all problems aren't the fault of the user. Sigh...any thoughts ? Thanks, Andy -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA USA http://www.wlug.org _______________________________________________ Wlug mailing list Wlug@mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug