I haven't read this whole thread, so I apologize if this has been discussed before, but... do you by chance have a mail filtering appliance? I've run into something like this before, and the problem was that I've only authorized certain internal IPs to our spam filter appliance that allow relaying mail through the same. This was put in a place a few years ago when we were notified by ICN that a small amount of spam seemed to be coming through our IPs into their system. So I was forced to lock down our internal network to just a few specifically-allowed SMTP relays.
David Kenny Network Administrator Belvidere CUSD #100 -----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 8:38 PM To: Tech-Geeks Mailing List Subject: Re: [tech-geeks] Exchange 5.7.1 SMPT error In our case, I tried OWA. Same problem. -----Original Message----- From: tech-geeks-boun...@tech-geeks.org [mailto:tech-geeks-boun...@tech-geeks.org] On Behalf Of McKay, Curtis Sent: Wednesday, September 29, 2010 3:48 PM To: 'Tech-Geeks Mailing List' Subject: Re: [tech-geeks] Exchange 5.7.1 SMPT error I'd still be curious to see if it would work if the user tried 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 Mike McGowan Sent: Wednesday, September 29, 2010 1:58 PM To: Tech-Geeks Mailing List Subject: Re: [tech-geeks] Exchange 5.7.1 SMPT error I do apologize. In the hurry of responding I was not paying much attention. We are set up for Exchange accounts. Mike -----Original Message----- From: tech-geeks-boun...@tech-geeks.org [mailto:tech-geeks-boun...@tech-geeks.org] On Behalf Of McKay, Curtis Sent: Wednesday, September 29, 2010 1:24 PM To: 'Tech-Geeks Mailing List' Subject: Re: [tech-geeks] Exchange 5.7.1 SMPT error If it's exchange and it's local Outlook, user should probably be setup as an exchange account. Any reason you're using POP3 & SMTP? 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 Mike McGowan Sent: Wednesday, September 29, 2010 1:04 PM To: Tech-Geeks Mailing List Subject: Re: [tech-geeks] Exchange 5.7.1 SMPT error Yes pop3. This is not for every address or every person either. Just certain people that we send emails to. -----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 | | Subscription info at http://www.tech-geeks.org | | Subscription info at http://www.tech-geeks.org | | Subscription info at http://www.tech-geeks.org | Pursuant to Illinois’ public records law, this written communication may constitute a public record which is available to the public and media upon request. Please be advised that this email communication may be subject to public disclosure. | Subscription info at http://www.tech-geeks.org |
