Over quota Issue

I'm getting a similar problem after exim /cpanel 78 update, however most of our emails are being rejected with the error "The email account that you tried to reach is over quota" Please refer the snippet: === 2019-06-22 06:26:10 1hdqZY-000n5S-Es H=gmail-smtp-in.l.google.com [74.125.192.27]: SMTP error from remote mail server after RCPT TO:: 452-4.2.2 The email account that you tried to reach is over quota. Please direct\n452-4.2.2 the recipient to\n452 4.2.2 https://support.google.com/mail/?p=OverQuotaTemp k18si2191579qvf.72 - gsmtp 2019-06-22 06:26:12 1hdqZY-000n5S-Es H=alt1.gmail-smtp-in.l.google.com [64.233.190.27]: SMTP error from remote mail server after RCPT TO:: 452-4.2.2 The email account that you tried to reach is over quota. Please direct\n452-4.2.2 the recipient to\n452 4.2.2 https://support.google.com/mail/?p=OverQuotaTemp d27si3803663qtk.120 - gsmtp 2019-06-22 06:26:13 1hdqZY-000n5S-Es H=alt2.gmail-smtp-in.l.google.com [209.85.202.27]: SMTP error from remote mail server after RCPT TO:: 452-4.2.2 The email account that you tried to reach is over quota. Please direct\n452-4.2.2 the recipient to\n452 4.2.2 https://support.google.com/mail/?p=OverQuotaTemp t29si5527981edb.20 - gsmtp 2019-06-22 06:26:14 1hdqZY-000n5S-Es H=alt3.gmail-smtp-in.l.google.com [108.177.15.26]: "