nginx – Unable to understanding Postfix Mail Log

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Recently I checked my mail log and found a lot of messages like this

ay 20 13:00:06 dedi postfix/pickup[19049]: A4F301ABD95: uid=0 from=<root>
May 20 13:00:06 dedi postfix/cleanup[31211]: A4F301ABD95: message-id=<20230520073006.A4F301ABD95@Domainname.com>
May 20 13:00:06 dedi postfix/qmgr[28935]: A4F301ABD95: from=<root@Domainname.com>, size=646, nrcpt=1 (queue active)
May 20 13:00:06 dedi dovecot: lmtp(32531): Connect from local
May 20 13:00:06 dedi dovecot: lmtp(root@Domainname.com): msgid=<20230520073006.A4F301ABD95@Domainname.com>: saved mail to INBOX
May 20 13:00:06 dedi dovecot: lmtp(32531): Disconnect from local: Successful quit
May 20 13:00:06 dedi postfix/lmtp[31740]: A4F301ABD95: to=<root@Domainname.com>, orig_to=<root>, relay=Domainname.com[private/dovecot-lmtp], delay=0.06, delays=0.05/0/0/0.01, dsn=2.0.0, status=sent (250 2.0.0 <root@Domainname.com> MAT2Kv52aGQTfwAAM95x3w Saved)
May 20 13:00:06 dedi postfix/qmgr[28935]: A4F301ABD95: removed
May 20 13:00:56 dedi postfix/pickup[19049]: DD25C1ABD95: uid=0 from=<root>
May 20 13:00:56 dedi postfix/cleanup[31211]: DD25C1ABD95: message-id=<20230520073056.DD25C1ABD95@Domainname.com>
May 20 13:00:56 dedi postfix/qmgr[28935]: DD25C1ABD95: from=<root@Domainname.com>, size=646, nrcpt=1 (queue active)
May 20 13:00:56 dedi dovecot: lmtp(32531): Connect from local
May 20 13:00:57 dedi dovecot: lmtp(root@Domainname.com): msgid=<20230520073056.DD25C1ABD95@Domainname.com>: saved mail to INBOX
May 20 13:00:57 dedi dovecot: lmtp(32531): Disconnect from local: Successful quit
May 20 13:00:57 dedi postfix/lmtp[31740]: DD25C1ABD95: to=<root@Domainname.com>, orig_to=<root>, relay=Domainname.com[private/dovecot-lmtp], delay=0.13, delays=0.07/0/0.01/0.04, dsn=2.0.0, status=sent (250 2.0.0 <root@Domainname.com> sHKOOjB3aGQTfwAAM95x3w Saved)
May 20 13:00:57 dedi postfix/qmgr[28935]: DD25C1ABD95: removed

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