[courier-users] Troubleshooting 417 DNS lookup failure
This is a discussion on [courier-users] Troubleshooting 417 DNS lookup failure within the Courier-Imap forums, part of the Mail Servers and Related category; Hello, some customer have problem sending email to us. When they tested using telnet : [bfreebody@server-14 bfreebody]$ telnet mail....
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02-22-2008
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[courier-users] Troubleshooting 417 DNS lookup failure
Hello,
some customer have problem sending email to us. When they tested using telnet : [bfreebody@server-14 bfreebody]$ telnet mail.LEXUM.UMontreal.CA. 25 Trying 132.204.136.52... Connected to mail.LEXUM.UMontreal.CA.. Escape character is '^]'. 220 gw-mail.lexum.umontreal.ca ESMTP helo mail139.messagelabs.com 250 gw-mail.lexum.umontreal.ca Ok. mail from:<test@bell.ca> 417 DNS lookup failure: bell.ca. Try again later. ^] telnet> quit What is courier-mta doing when user had the mail from ? I supposed it is a dns lookup but of which fqdn ? ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/.../courier-users 
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