We are getting the following error message several times a day and what we need to do is flush the DNS on the server and retry delivery and it then sends them out. We use Mimesweeper for SMTP and this is were the QUEUES are getting backed up and where we have to flush the DNS and restart the infastructure service. My question is this something wrong with the mimesweeper server or is this a general DNS issue. I have talked with Mimesweeper and we get mixed reviews on if it is a mimesweeper issue or a DNS issue. Just hope someone else out there can shed some light on this problem.
The e-mail system was unable to deliver the message, but did not report a specific reason. Check the address and try again. If it still fails, contact your system administrator.
< SERVERNAME.DOMAIN.com #5.0.0 smtp; 550-mail.scc-inc.com (SERVERNAME.DOMAIN.com) :2261 is currently not 550-permitted to relay through this server. Perhaps you have not logged into 550-the pop/imap server in the last 30 minutes or do not have SMTP 550 Authentication turned on in your email client.>