Either get a rDNS entry or use your ISP as your smarthost for Exchange. Regards,
Michael B. Smith MCSE/Exchange MVP http://TheEssentialExchange.com -----Original Message----- From: Melanie Foster [mailto:[EMAIL PROTECTED] Sent: Thursday, May 08, 2008 8:40 PM To: NT System Admin Issues Subject: Help with Mail Setup Hi I'm a bit green when it comes to certain things and I'm hoping to get some assistance from the group. Setup: Exchange server internally Use POPBeamer to retrieve email from 3rd party server Send email through our Exchange server thru our ISP's outgoing servers. Problem: I'm starting to get more and more mail bounced back, specifically from AOL. I believe it's due to how we send our email. This is the error: There was a SMTP communication problem with the recipient's email server. Please contact your system administrator. <heltonindustries.com #5.5.0 smtp;554-: (DNS:B2) http://postmaster.info.aol.com/errors/554dnsb2.html> Can I please get suggestions on how to fix? Hosting our own email is not an option. Thanks, Melanie ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~ ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~
