Hi,
out of a sudden postfix stopped accepting mails for local mailboxes. The mail is rejected with
May 28 23:15:59 srv1 postfix/smtpd[31103]: NOQUEUE: reject: RCPT from unknown[17.148.16.73]: 554 5.7.1 : Relay access denied; from= to= proto=ESMTP helo=
May 28 23:23:35 srv1 postfix/smtpd[32674]: NOQUEUE: reject: RCPT from unknown[17.148.16.76]: 554 5.7.1 : Relay access denied; from= to= proto=ESMTP helo=
May 29 00:36:49 srv1 postfix/smtpd[13329]: NOQUEUE: reject: RCPT from unknown[17.148.16.81]: 554 5.7.1 : Relay access denied; from= to= proto=ESMTP helo=
May 29 00:41:03 srv1 postfix/pickup[13247]: 92BA1E88CB: uid=0 from=
May 29 00:41:03 srv1 postfix/qmgr[13246]: 92BA1E88CB: from=, size=902, nrcpt=2 (queue active)
May 29 00:41:04 srv1 postfix/smtp[13925]: 92BA1E88CB: to=, relay=none, delay=0.1, delays=0.1/0/0/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=mac.com type=A: Host found but no data record of requested type)
May 29 00:41:04 srv1 postfix/smtp[13925]: C6D10E88CC: to=, relay=none, delay=0.04, delays=0.04/0/0/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=mac.com type=A: Host found but no data record of requested type)
Any idea what to check?