Ups eod error message

I am trying to run EOD from UPS and getting an error message. I am using ShipRush V9 and below is my the error message from the shiprushserver log.

7/18/2016 6:43:18 PM 9.6.0.50524 MAIL Start checking/processing mail
7/18/2016 6:43:18 PM 9.6.0.50524 MAIL Receiving UPS Mail
7/18/2016 6:43:19 PM 9.6.0.50524 WARNING (UPSLinkHTTP.ListMail) failed
7/18/2016 6:43:19 PM 9.6.0.50524 ERROR List Mail connection error: HttpComm error: DNS lookup failed. [53670]
7/18/2016 6:43:19 PM 9.6.0.50524 MAIL (TUPSCommunicator.ReceiveMail) Error receiving UPS Mail: List Mail connection error: HttpComm error: DNS lookup failed. [53670]
7/18/2016 6:43:19 PM 9.6.0.50524 PC_CONFIG PC_Config update message NOT prepared - No changes detected
7/18/2016 6:43:19 PM 9.6.0.50524 MAIL Sending UPS Mail
7/18/2016 6:43:19 PM 9.6.0.50524 MAIL 1 messages to send
7/18/2016 6:43:19 PM 9.6.0.50524 MAIL Sending mail : Type "PC_CONFIG", File: "c:\program files (x86)\z-firm llc\shiprush v9\UPS_MAIL\20160718184319959.MAIL"
7/18/2016 6:43:20 PM 9.6.0.50524 WARNING (UPSLinkHTTP.SendMailEx) failed
7/18/2016 6:43:20 PM 9.6.0.50524 ERROR Send Mail connection error: HttpComm error: DNS lookup failed. [53670]
7/18/2016 6:43:20 PM 9.6.0.50524 MAIL (TUPSCommunicator.SendMail) Error sending UPS Mail: Send Mail connection error: HttpComm error: DNS lookup failed. [53670] [message ID: 000000000001054]
7/18/2016 6:43:20 PM 9.6.0.50524 MAIL Done sending mail

Can you please let me know what I need to do to fix this error message.