Here is the scenario:
Client has a hosted Lotus Domino (makes no difference what email system it is at the back end) system that uses Google Apps as its email gateway (both ways)
Client has a number of 'team' groups setup with SMTP Addresses in Domino
When an external email account (say a customer) sends an email to one of these team groups, the members of the group receive the email.
Except, only the internal members are getting these emails. If, contained in one of these groups, is an external email address - say a consultant etc. the customer receives an NDR that states:
Delivery has failed to these recipients or groups:
A problem occurred while delivering this message to this email address. Try sending this message again. If the problem continues, please contact your helpdesk.
The following organization rejected your message: gmail-smtp-relay.l.google.COM.
Diagnostic information for administrators:
Generating server: webmail.clientdomain.com
Remote Server returned '<gmail-smtp-relay.l.google.COM #5.0.0 X-Notes; Error transferring to gmail-smtp-relay.l.goo gle.COM; SMTP Protocol Returned a Permanent Error 550 5.7.1 Invalid cr edentials for relay [client.server.ip.addr]. md8sm67683wjb.3 - gsmtp>'
Any one seen this before?