Hello Raymond, Can you please be alot more specific, maybe provide IP addresses/ e-mail addresses. Are all the e-mails rejected coming from the lctn domain? Have you had your users try to directly contact these people and ask them if Frontier uses an accept-only list? Please, provide more information? David On Wednesday, March 15, 2006 12:09 PM, Raymond Norton wrote: > >Date: Wed, 15 Mar 2006 12:09:19 -0600 (CST) >From: Raymond Norton >To: tclug-list at mn-linux.org >Subject: [tclug-list] Frontier dot net rejecting mail > >We are getting 554 messages back from Frontier (invalid helo). This is >only affecting one mail server using sendmail-8.13.1-2. I have googled >around a bit on this, but am not finding an answer that pertains to our >server. > >Any ideas what to look for? > >-- >Raymond Norton >LCTN > > > >_______________________________________________ >TCLUG Mailing List - Minneapolis/St. Paul, Minnesota >tclug-list at mn-linux.org >http://mailman.mn-linux.org/mailman/listinfo/tclug-list "Great Spirits Have Always Encountered Violent Opposition From Mediocre Minds" - Einstein "Cuanta estupidez en tan poco cerebro!"