–noabletosearch option is needed
If –noabletosearch is on then –minage and –maxage deal with the internal dates given by a FETCH imap command but not the Date: header. Internal date is the arrival date in the mailbox. Same remark for –noabletosearch1 and–noabletosearch2 but only for one side then.
the source server is imap.yandex.ru with this issue