Jun 30 12:45:09 kucharky postfix/qmgr[3188]: 42ACF22FA150: from=<www-data@kucharky.ui42.sk>, size=377510, nrcpt=1 (queue active)
Jun 30 12:45:09 kucharky postfix/qmgr[3188]: 8242622FA153: from=<www-data@kucharky.ui42.sk>, size=377555, nrcpt=1 (queue active)
Jun 30 12:45:09 kucharky postfix/qmgr[3188]: 0B05C22FA151: from=<www-data@kucharky.ui42.sk>, size=377512, nrcpt=1 (queue active)
Jun 30 12:45:09 kucharky postfix/smtp[21466]: 42ACF22FA150: host ASPMX.L.GOOGLE.COM[74.125.206.27] said: 450-4.2.1 The user you are trying to contact is receiving mail at a rate that 450-4.2.1 prevents additional messages from being delivered. Please resend your 450-4.2.1 message at a later time. If the user is able to receive mail at that 450-4.2.1 time, your message will be delivered. For more information, please 450-4.2.1 visit 450 4.2.1  https://support.google.com/mail/answer/6592 n1si18670303wif.28 - gsmtp (in reply to RCPT TO command)
Jun 30 12:45:09 kucharky postfix/smtp[21465]: 0B05C22FA151: host ASPMX.L.GOOGLE.COM[64.233.167.27] said: 450-4.2.1 The user you are trying to contact is receiving mail at a rate that 450-4.2.1 prevents additional messages from being delivered. Please resend your 450-4.2.1 message at a later time. If the user is able to receive mail at that 450-4.2.1 time, your message will be delivered. For more information, please 450-4.2.1 visit 450 4.2.1  https://support.google.com/mail/answer/6592 y7si18639358wij.68 - gsmtp (in reply to RCPT TO command)
Jun 30 12:45:09 kucharky postfix/smtp[21456]: 8242622FA153: host ASPMX.L.GOOGLE.COM[173.194.67.27] said: 450-4.2.1 The user you are trying to contact is receiving mail at a rate that 450-4.2.1 prevents additional messages from being delivered. Please resend your 450-4.2.1 message at a later time. If the user is able to receive mail at that 450-4.2.1 time, your message will be delivered. For more information, please 450-4.2.1 visit 450 4.2.1 https://support.google.com/mail/answer/6592 el1si18603697wib.120 - gsmtp (in reply to RCPT TO command)
Jun 30 12:45:09 kucharky postfix/smtp[21466]: 42ACF22FA150: to=<kucharky@kucharky.sk>, relay=ALT1.ASPMX.L.GOOGLE.COM[64.233.165.27]:25, delay=473, delays=472/0/0.36/0.16, dsn=4.2.1, status=deferred (host ALT1.ASPMX.L.GOOGLE.COM[64.233.165.27] said: 450-4.2.1 The user you are trying to contact is receiving mail at a rate that 450-4.2.1 prevents additional messages from being delivered. Please resend your 450-4.2.1 message at a later time. If the user is able to receive mail at that 450-4.2.1 time, your message will be delivered. For more information, please 450-4.2.1 visit 450 4.2.1 https://support.google.com/mail/answer/6592 vk4si37762082lbb.147 - gsmtp (in reply to RCPT TO command))
Jun 30 12:45:09 kucharky postfix/smtp[21465]: 0B05C22FA151: to=<objednavky@kucharky.sk>, relay=ALT1.ASPMX.L.GOOGLE.COM[64.233.165.27]:25, delay=473, delays=473/0/0.43/0.12, dsn=4.2.1, status=deferred (host ALT1.ASPMX.L.GOOGLE.COM[64.233.165.27] said: 450-4.2.1 The user you are trying to contact is receiving mail at a rate that 450-4.2.1 prevents additional messages from being delivered. Please resend your 450-4.2.1 message at a later time. If the user is able to receive mail at that 450-4.2.1 time, your message will be delivered. For more information, please 450-4.2.1 visit 450 4.2.1 https://support.google.com/mail/answer/6592 s2si37750789lal.142 - gsmtp (in reply to RCPT TO command))