==== 必填信息。没有填写将不予回复 ====
- iRedMail 版本号：0.9.7
- 使用哪个数据库存储用户帐号（OpenLDAP，MySQL，PostgreSQL）：mysql
- 使用的 Linux/BSD 发行版名称及版本号：CentOS Linux release 7.1.1503 (Core)
- 与您的问题相关的日志信息：
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Aug 30 10:32:24 mx postfix/amavis/smtp[2054]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused
Aug 30 10:32:24 mx postfix/amavis/smtp[2056]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused
Aug 30 10:32:24 mx postfix/amavis/smtp[2054]: C11E11A5AF: to=<postmaster@xw.iredmail.org>, relay=none, delay=2361, delays=2361/0.02/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)
Aug 30 10:32:24 mx postfix/amavis/smtp[2056]: 2ED641A5B5: to=<postmaster@xw.iredmail.org>, relay=none, delay=377, delays=377/0.03/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)
Aug 30 10:37:24 mx postfix/qmgr[1355]: BA4BC1A5A7: from=<test@xw.iredmail.org>, size=914, nrcpt=1 (queue active)
Aug 30 10:37:24 mx postfix/amavis/smtp[2074]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused
Aug 30 10:37:24 mx postfix/amavis/smtp[2074]: BA4BC1A5A7: to=<postmaster@xw.iredmail.org>, relay=none, delay=2250, delays=2250/0.02/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)
Aug 30 10:37:38 mx clamd[982]: SelfCheck: Database status OK.
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按照文档里做的修改，查看10024端口都没见有监听，是不是哪个服务没启，指导下！
Allow insecure SMTP connection on port 25

Please comment out lines below in Postfix config file /etc/postfix/main.cf and reload or restart Postfix service:
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous

# force all clients to use secure connection through port 25
#smtpd_tls_auth_only=yes