iVend 6.6
iVend Scheduler log ( configured on iVend Enterprise MC) displays below error
System.Net.Mail.SmtpException: Transaction failed. The server response was: 5.2.252 SendAsDenied; useremail@domainname.com not allowed to send as useremail@domainname.com; STOREDRV.Submission.Exception:SendAsDeniedException.MapiExceptionSendAsDenied; Failed to process message due to a permanent exception with message [BeginDiagnosticData]Cannot submit message. 1.84300:01000000, 1.84300:0B000000, 1.84300:0A000000, 1.84300:0A000000, 1.84300:0E000000, 1.84300:32000000, 1.116652:93190000, 1.81836:E2020000, 0.117068:9F000000, 1.79180:0B000000, 1.79180:0A000000, 1.79180:0A000000, 1.79180:0E000000, 1.79180:32000000, 1.79180:FA000000, 0.73100:00000000, 0.38698:05000780, 1.41134:87000000, 1.41134:87000000, 1.41134:87000000, 1.41134:47000000, 0.37692:01000000, 0.44092:7A000100, 0.41232:9ED138DB, 0.60208:87000000, 0.37136:7A000100, 0.34608:64CB0200, 0.55056:7A000100, 0.42768:7A000100, 0.56112:B14AE701, 0.52807:DAE3E601, 0.46663:3A376439, 1.41134:47000000, 7.36354:01000000000001092D633863, 4.33016:DC040000, 7.40748:010000000000010B5420382E, 7.57132:00000000000000005AE77554, 4.39640:DC04..
The meaning of the error is that the configured mail account has no rights to send the mail. It is suggested to rectify the issue, check the rights of the user name or use the user with the correct rights.
You may check below article for the same.