The EmailService processing unit logs provides information indicating whether the email address of the distribution group is set for each outbound email.

The following information is available in the EmailService PU log:

2020-08-06 12:12:20.400+0100 [I: SendMail-1: c.a.o.m.m.o.s.s.SMTPSender] M:createMessage][T:null]. Using group email address[OceanaGroup@avaya.com] as sender address

When you configure Send as group, but the email address of the distribution Group is not retrieved from database, an error is logged in the EmailService PU logs and mailbox’s email address is used.

The following error is logged in the EmailService PU log:

2020-08-06 12:12:20.400+0100 [E: SendMail-1: c.a.o.m.m.o.OutboundMailManager][M: toSMTPConfiguration][T:OceanaMailbox@avaya.com]. Send as group is enabled but group email address is null for some reason. Using Inbox email address instead

When the mailbox does not have a proper permission to send as distribution group, an error is logged in EmailService PU logs and is written into database for display on the Statistics page of the OCPDataViewer.