SQL:UPDATE kms_isp_mailings__ SET status='opened',last_update='2022-08-19 12:38:04',opened_datetime='2022-08-19 12:38:04',relay_ip='44.197.230.180',opened_from_city='Ashburn',opened_from_country='United States',opened_on='browser' WHERE rcpt_to='' AND id_mailing='' and id_client='' and status!='bounced' Suspended Domain

This account has been suspended

Either the domain has been overused, or the reseller ran out of resources.