/var/log/maillog について
Red Hat Linux 8.0とsendmailとqpopperを使用してメールサーバーを構築しています。
/var/log/maillogに１時間に一回、200行ほどのログが一気に書き込まれ
ログの容量が肥大化して困っています。
ログの一部は
Feb 6 21:14:01 xxxx sm-msp-queue[680]: h15L4fBd004705: to=root, delay=15:09:16, xdelay=00:03:09, mailer=relay, pri=121617, relay=[localhost] [1.0.0.127], dsn=4.0.0, stat=Deferred: Connection timed out with [localhost]
Feb 6 21:14:01 xxxx sm-msp-queue[680]: h15L4fBe004705: to=root, delay=15:09:15, xdelay=00:00:00, mailer=relay, pri=121617, relay=[localhost], dsn=4.0.0, stat=Deferred: Connection timed out with [localhost]
Feb 6 21:14:01 xxxx sm-msp-queue[680]: h15L4fBf004705: to=root, delay=15:09:15, xdelay=00:00:00, mailer=relay, pri=121617, relay=[localhost], dsn=4.0.0, stat=Deferred: Connection timed out with [localhost]
Feb 6 21:14:01 xxxx sm-msp-queue[680]: h15L4fBg004705: to=root, delay=15:09:15, xdelay=00:00:00, mailer=relay, pri=121617, relay=[localhost], dsn=4.0.0, stat=Deferred: Connection timed out with [localhost]
Feb 6 21:14:01 xxxx sm-msp-queue[680]: h15L4fBh004705: to=root, delay=15:09:15, xdelay=00:00:00, mailer=relay, pri=121617, relay=[localhost], dsn=4.0.0, stat=Deferred: Connection timed out with [localhost]
Feb 6 21:14:01 xxxx sm-msp-queue[680]: h15L4fBi004705: to=root, delay=15:09:14, xdelay=00:00:00, mailer=relay, pri=121617, relay=[localhost], dsn=4.0.0, stat=Deferred: Connection timed out with [localhost]
このような感じです。どすれば止まるでしょうか？
困っています、教えて頂けませんか。
（xxxxは自分の設定したドメインの頭です xxxx.ne.jp）
