I am receiving below alert email error.
 
an alert email test message could be sent because an attempt to send an alert email to "email" has resulted in error: hostname resolution failed.
 
setting have in place,
 
sasv9.cfg file has
-emailsys SMTP
-emailhost email123.company.com
-emailport 25
-emailid "SASMeta - Metadata Server (sasconfig - Lev1) <noreply_xyz@email123.company.com>"
 
at smc "sas application infrastructure" -> administrative and error messages
      sender of messages -> test_help@company.com
      recipient of administrative messages -> myemail@company.com
 
I tested email from Linux cmd line and tried to send email to me which went fine. I have same email at omaconfig.xml file as well.
echo "test email" | sendmail mymail@company.com