发邮件不稳定，求助

lhm0491

Jan 26 13:58:16 www imapd: LOGIN, user=roger@yumida.net, ip=[::ffff:127.0.0.1], port=[51331], protocol=IMAP
Jan 26 13:58:16 www postfix/smtpd[21721]: connect from unknown[127.0.0.1]
Jan 26 13:58:16 www postfix/smtpd[21721]: warning: connect to Milter service inet:localhost:8891: Connection refused
Jan 26 13:58:16 www postfix/smtpd[21721]: NOQUEUE: milter-reject: CONNECT from unknown[127.0.0.1]: 451 4.7.1 Service unavailable - try again later;

proto=SMTP
Jan 26 13:58:16 www postfix/smtpd[21721]: NOQUEUE: milter-reject: EHLO from unknown[127.0.0.1]: 451 4.7.1 Service unavailable - try again later;

proto=SMTP helo=<localhost>
Jan 26 13:58:16 www postfix/smtpd[21721]: NOQUEUE: milter-reject: MAIL from unknown[127.0.0.1]: 451 4.7.1 Service unavailable - try again later;

from=<roger@yumida.net> proto=ESM
Jan 26 13:58:16 www postfix/smtpd[21721]: disconnect from unknown[127.0.0.1]
Jan 26 13:58:16 www imapd: LOGOUT, user=roger@yumida.net, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=10, sent=83, time=0

不稳定，
有时发送失败（上面日志），
有时候成功（下面日志），
请教是什么原因导致的呢？谢谢

Jan 26 14:00:00 www postfix/master[800]: reload -- version 2.6.2, configuration /usr/local/etc/postfix
Jan 26 14:00:00 www dk-filter[21787]: Sendmail DomainKeys Filter v1.0.2 starting (args: -l -p inet:8891@localhost -d yumida.net,test.com -s

/usr/local/etc/dkim/default.private -S
Jan 26 14:00:17 www imapd: LOGIN, user=roger@yumida.net, ip=[::ffff:127.0.0.1], port=[63618], protocol=IMAP
Jan 26 14:00:17 www postfix/smtpd[21791]: connect from unknown[127.0.0.1]
Jan 26 14:00:17 www postfix/trivial-rewrite[21793]: warning: do not list domain yumida.net in BOTH mydestination and virtual_mailbox_domains
Jan 26 14:00:17 www postfix/smtpd[21791]: A2F4818702B: client=unknown[127.0.0.1]
Jan 26 14:00:17 www policyd: connection from: 127.0.0.1 port: 52683 slots: 0 of 1023 used
Jan 26 14:00:17 www policyd: connecting to mysql database: localhost
Jan 26 14:00:17 www policyd: connected..
Jan 26 14:00:17 www policyd: rcpt=4, throttle=update(a), host=127.0.0.1 (unknown), from=roger@yumida.net, to=443916@qq.com, size=351/1024000000,

quota=3596/250000000, count=7/800
Jan 26 14:00:17 www postfix/cleanup[21794]: A2F4818702B: message-id=<0bb9e68717cc6a8e3b7e2e3ca67b5429@localhost>
Jan 26 14:00:18 www postfix/qmgr[21788]: A2F4818702B: from=<roger@yumida.net>, size=554, nrcpt=1 (queue active)
Jan 26 14:00:18 www imapd: LOGOUT, user=roger@yumida.net, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=398, sent=131, time=1
Jan 26 14:00:18 www postfix/smtpd[21791]: disconnect from unknown[127.0.0.1]
Jan 26 14:00:18 www imapd: LOGIN, user=roger@yumida.net, ip=[::ffff:127.0.0.1], port=[56099], protocol=IMAP
Jan 26 14:00:18 www imapd: LOGOUT, user=roger@yumida.net, ip=[::ffff:127.0.0.1], headers=404, body=0, rcvd=286, sent=1121, time=0
Jan 26 14:00:18 www postfix/smtp[21795]: A2F4818702B: to=<443916@qq.com>, relay=mx3.qq.com[112.90.142.116]:25, delay=0.93, delays=0.47/0.02/0.14/0.31,

dsn=2.0.0, status=sent (250
Jan 26 14:00:18 www postfix/qmgr[21788]: A2F4818702B: removed
Jan 26 14:00:19 www imapd: LOGIN, user=roger@yumida.net, ip=[::ffff:127.0.0.1], port=[52181], protocol=IMAP
Jan 26 14:00:19 www imapd: LOGOUT, user=roger@yumida.net, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=62, sent=368, time=0

cuci

你的milter过滤器挂了，8891端口掉了