alter table mx_mta_ip_log_old set unused column sdomain;
alter table mx_mta_ip_log_old set unused column subject;
alter table mx_mta_ip_log_old set unused column ipwhere;
alter table mx_mta_ip_log_old set unused column hello;
alter table mx_mta_ip_log_old set unused column ptr;
alter table mx_mta_ip_log_old set unused column data_err;
alter table mx_mta_ip_log_old drop unused columns checkpoint 1000;
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