It sounds like a transport issue. Almost sounds like Outlook is setup using SMTP to send the mail to exchange but exchange by default doesn't allow relaying for anybody.
What if the same user sending to the same address uses OWA? Curtis McKay Network Administrator Belleville Township High School District 201 cmc...@bths201.org -----Original Message----- From: tech-geeks-boun...@tech-geeks.org [mailto:tech-geeks-boun...@tech-geeks.org] On Behalf Of Bernoli Baello Sent: Wednesday, September 29, 2010 1:00 PM To: Tech-Geeks Mailing List Subject: Re: [tech-geeks] Exchange 5.7.1 SMPT error We are getting the same problem; we have Exchange 2007. The e-mails were sent using Outlook. Bernoli I. Baello, Ph.D. Chairman, Science and Math Department Technology Coordinator Northridge Preparatory School 8320 Ballard Rd Niles IL 60714 (o) 847.375.0600 (f) 847.375.0606 -----Original Message----- From: tech-geeks-boun...@tech-geeks.org [mailto:tech-geeks-boun...@tech-geeks.org] On Behalf Of Ekhoff, Andrew Sent: Wednesday, September 29, 2010 12:55 PM To: Tech-Geeks Mailing List Subject: Re: [tech-geeks] Exchange 5.7.1 SMPT error Are you using POP3? Andy Andrew Ekhoff Technology Coordinator St. Anne Public Schools aekh...@sags.k12.il.us SAGS: (815) 427-8153 SACHS: (815) 427-8141 -----Original Message----- From: tech-geeks-boun...@tech-geeks.org [mailto:tech-geeks-boun...@tech-geeks.org] On Behalf Of Mike McGowan Sent: Wednesday, September 29, 2010 12:42 PM To: Tech-Geeks Mailing List Subject: [tech-geeks] Exchange 5.7.1 SMPT error I am getting this error message when we send emails to certain people. mail.L156.org #5.7.1 smtp;550 5.7.1 Unable to relay for "sender". We are using Exchange 2003. Has anyone seen a fix for this? I have looked all over online and am not finding the solution. Thanks. Mike McGowan | Subscription info at http://www.tech-geeks.org | | Subscription info at http://www.tech-geeks.org | | Subscription info at http://www.tech-geeks.org | | Subscription info at http://www.tech-geeks.org |
