Use real server address instead of 127.0.0.1 in your account.' Generating server: Server returned '550 No SMTP server defined. Use real server address instead of 127.0.0.1 in your account.ĭiagnostic information for administrators: If the problem continues, please contact your email admin. Subject: Undeliverable: RE: Payment Needed - VMC Design OrderĮXCHANGE2016 rejected your message to the following email addresses:įRecp LRecp problem occurred while delivering your message to this email address. Here is the actual (revised) email the user gets: From: Microsoft Outlook Under Email Connectivity, do one of the following. On the mailbox properties page, click Mailbox Features. In the list of user mailboxes, click the mailbox that you want to enable or disable MAPI, and then click Edit. I'd like know where to find where the SMTP server is defined as 127.0.0.1. Use the Classic EAC to enable or disable MAPI In the Classic EAC, navigate to Recipients > Mailboxes. I've noticed this happens mostly with gmail and comcast, but a few come from other domains. There have been no changes in the system for sometime so it is very interesting this error pops up like some sort of configuration error. A user gets a kickback stating the email was undeliverable. It has been running well for a few years now. We have an in house MS Exchange 2016 server.
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