root@gotsvl1933:/etc/systemd/system# systemctl status mango
● mango.service - Mango Automation
   Loaded: loaded (/etc/systemd/system/mango.service; enabled; vendor preset: enabled)
   Active: active (running) since Sat 2022-03-26 11:46:57 CET; 1s ago
  Process: 27540 ExecStart=/opt/mango/bin/start-mango.sh (code=exited, status=0/SUCCESS)
 Main PID: 27551 (java)
    Tasks: 19 (limit: 9473)
   CGroup: /system.slice/mango.service
           └─27551 java -server -Dma.home=/opt/mango com.serotonin.m2m2.Main

Mar 26 11:46:58 gotsvl1933 start-mango.sh[27540]:         at org.apache.logging.log4j.jcl.LogAdapter.getContext(LogAdapter.java:40)
Mar 26 11:46:58 gotsvl1933 start-mango.sh[27540]:         at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:47)
Mar 26 11:46:58 gotsvl1933 start-mango.sh[27540]:         at org.apache.logging.log4j.jcl.LogFactoryImpl.getInstance(LogFactoryImpl.java:40)
Mar 26 11:46:58 gotsvl1933 start-mango.sh[27540]:         at org.apache.logging.log4j.jcl.LogFactoryImpl.getInstance(LogFactoryImpl.java:55)
Mar 26 11:46:58 gotsvl1933 start-mango.sh[27540]:         at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:655)
Mar 26 11:46:58 gotsvl1933 start-mango.sh[27540]:         at com.serotonin.m2m2.util.DocumentationManifest.<clinit>(DocumentationManifest.java:27)
Mar 26 11:46:58 gotsvl1933 start-mango.sh[27540]:         at com.serotonin.m2m2.Common.<clinit>(Common.java:157)
Mar 26 11:46:58 gotsvl1933 start-mango.sh[27540]:         at com.serotonin.m2m2.Main.<clinit>(Main.java:93)
Mar 26 11:46:58 gotsvl1933 start-mango.sh[27540]: 2022-03-26 11:46:58,187 main ERROR Null object returned for RollingRandomAccessFile in Appenders.
Mar 26 11:46:58 gotsvl1933 start-mango.sh[27540]: 2022-03-26 11:46:58,195 main ERROR Unable to locate appender "logfile" for logger config "root"

after a couple of minutes, the system is restarting.

Any idea where is the problem?
I am logged as root.

if I stop the service and run /opt/mango/bin/ma.sh start
system stops at the :

nested exception is:
com.sun.mail.smtp.SMTPAddressFailedException: 550 #5.1.0 Address rejected.

    at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:490) ~[spring-context-support-5.1.7.RELEASE.jar:5.1.7.RELEASE]
    at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:360) ~[spring-context-support-5.1.7.RELEASE.jar:5.1.7.RELEASE]
    at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:377) ~[spring-context-support-5.1.7.RELEASE.jar:5.1.7.RELEASE]
    at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:365) ~[spring-context-support-5.1.7.RELEASE.jar:5.1.7.RELEASE]
    at com.serotonin.web.mail.EmailSender.send(EmailSender.java:179) ~[mango-3.7.11.jar:?]
    at com.serotonin.web.mail.EmailSender.send(EmailSender.java:170) ~[mango-3.7.11.jar:?]
    at com.serotonin.web.mail.EmailSender.send(EmailSender.java:123) ~[mango-3.7.11.jar:?]
    at com.serotonin.m2m2.rt.maint.work.EmailWorkItem.execute(EmailWorkItem.java:91) ~[mango-3.7.11.jar:?]
    at com.serotonin.m2m2.rt.maint.BackgroundProcessingImpl$WorkItemRunnable.run(BackgroundProcessingImpl.java:671) ~[mango-3.7.11.jar:?]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[?:?]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[?:?]
    at java.lang.Thread.run(Thread.java:829) [?:?]