Mysql 5.5.54 upgrade / Warnings

Pascal Longrais <[email protected]> Fri, 30 Jun 2017 16:49:09 +0200
Newsgroups gmane.mail.imap.dbmail
Message-ID <[email protected]>
Hello,

Since I upgraded mysql in use with DBMail 2.2.17, I now have 
continuously warning messages flooding the log file.

170630 16:30:25 [Warning] Unsafe statement written to the binary log 
using statement format since BINLOG_FORMAT = STATEMENT. Statements 
writing to a table with an auto-increment column after selecting from 
another table are unsafe because the order in which rows are retrieved 
determines what (if any) rows will be written. This order cannot be 
predicted and may differ on master and the slave. Statement: INSERT INTO 
dbmail_messages (mailbox_idnr,physmessage_id, seen_flag, answered_flag, 
deleted_flag, flagged_flag, recent_flag, draft_flag, unique_id, status) 
SELECT 1, physmessage_id, seen_flag, answered_flag, deleted_flag, 
flagged_flag, recent_flag, draft_flag, 
'00e88ea75a58a5653ab2fb0615e2bec6', status FROM dbmail_messages WHERE 
message_idnr = 1179279

How is this warning critical ?

Can I fix something ?

Thx & best regards

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