nginx – Unable to understanding Postfix Mail Log

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=<[email protected]>
May 20 13:00:06 dedi postfix/qmgr[28935]: A4F301ABD95: from=<[email protected]>, 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([email protected]): msgid=<[email protected]>: 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=<[email protected]>, 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 <[email protected]> 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=<[email protected]>
May 20 13:00:56 dedi postfix/qmgr[28935]: DD25C1ABD95: from=<[email protected]>, 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([email protected]): msgid=<[email protected]>: 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=<[email protected]>, 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 <[email protected]> sHKOOjB3aGQTfwAAM95x3w Saved)
May 20 13:00:57 dedi postfix/qmgr[28935]: DD25C1ABD95: removed

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