我之前也遇到相同的错误，经检查是DNS解析的问题，无法解析到对方的域名
貌似最近很多兄弟都遇到这个问题，可能是国内DNS解析出问题了
我的是上海202.96.209.5

经添加Google DNS 8.8.8.8解决

/var/spool/postfix/etc/resolv.conf
/etc/resolv.conf

2个文件中都添加

删除后解决了，谢啦

谢啦

你看看帖子好了，2/4和2/11各一个帖子。。。。
希望能得到同等的服务品质

OK，谢了

有人可以解决吗？
难道只能关闭ClamAV啦

maillog
Dec 28 12:54:05 mail amavis[2790]: (02790-06) Blocked INFECTED (Exploit.PDF-22610(f60cfc7e5ee22c0382f3535fab9c5cbc:930379), Exploit.PDF-22610(82dfea702439669d850582516766ef9f:682526)), LOCAL [58.246.3.174] [58.246.3.174] <jack@lanever.com> -> <jackwjy@gmail.com>, quarantine: virus-kqVOxqD2BWzF, Message-ID: <47D1244287FC417083444F48DA9FC5B7@JackT400>, mail_id: kqVOxqD2BWzF, Hits: -, size: 942584, 641 ms
Dec 28 12:54:05 mail postfix/smtp[3490]: AA9A438B0708: to=<jackwjy@gmail.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=7.8, delays=7.2/0.01/0/0.65, dsn=2.5.0, status=sent (250 2.5.0 Ok, id=02790-06, DISCARD(bounce.suppressed))
Dec 28 12:54:05 mail postfix/qmgr[2783]: AA9A438B0708: removed

clamd.log
Tue Dec 28 12:54:05 2010 -> /var/amavis/tmp/amavis-20101228T124909-02790/parts/p007: Exploit.PDF-22610 FOUND
Tue Dec 28 12:54:05 2010 -> /var/amavis/tmp/amavis-20101228T124909-02790/parts/p003: Exploit.PDF-22610 FOUND

amavisd.conf

$policy_bank{'MYNETS'} = {   # mail originating from @mynetworks
  originating => 1,  # is true in MYNETS by default, but let's make it explicit
  os_fingerprint_method => undef,  # don't query p0f for internal clients
  bypass_virus_checks_maps => [1],
  allow_disclaimers => 1, # enables disclaimer insertion if available
};

# it is up to MTA to re-route mail from authenticated roaming users or
# from internal hosts to a dedicated TCP port (such as 10026) for filtering
$interface_policy{'10026'} = 'ORIGINATING';

$policy_bank{'ORIGINATING'} = {  # mail supposedly originating from our users
  originating => 1,  # declare that mail was submitted by our smtp client
  allow_disclaimers => 1,  # enables disclaimer insertion if available
  # notify administrator of locally originating malware
  virus_admin_maps => ["root\@$mydomain"],
  spam_admin_maps  => ["root\@$mydomain"],
  warnbadhsender   => 1,
  bypass_virus_checks_maps => [1],
  # forward to a smtpd service providing DKIM signing service
  forward_method => 'smtp:[127.0.0.1]:10027',
  # force MTA conversion to 7-bit (e.g. before DKIM signing)
  smtpd_discard_ehlo_keywords => ['8BITMIME'],
  bypass_banned_checks_maps => [1],  # allow sending any file names and types
  terminate_dsn_on_notify_success => 0,  # don't remove NOTIFY=SUCCESS option
};

还是不行啊，amavisd.conf修改好以后已经重启服务器了，还是被过滤

经检查发现roundcubemail数据库缺少2个表单，在SQL目录中的mysql.initial.sql中发现建表语句，建立2个表单解决
具体语句如下：

mysql -uroot -p roundcubemail

CREATE TABLE `contactgroups` (
  `contactgroup_id` int(10) UNSIGNED NOT NULL AUTO_INCREMENT,
  `user_id` int(10) UNSIGNED NOT NULL DEFAULT '0',
  `changed` datetime NOT NULL DEFAULT '1000-01-01 00:00:00',
  `del` tinyint(1) NOT NULL DEFAULT '0',
  `name` varchar(128) NOT NULL DEFAULT '',
  PRIMARY KEY(`contactgroup_id`),
  CONSTRAINT `user_id_fk_contactgroups` FOREIGN KEY (`user_id`)
    REFERENCES `users`(`user_id`) ON DELETE CASCADE ON UPDATE CASCADE,
  INDEX `contactgroups_user_index` (`user_id`,`del`)
) /*!40000 ENGINE=INNODB */ /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;

CREATE TABLE `contactgroupmembers` (
  `contactgroup_id` int(10) UNSIGNED NOT NULL,
  `contact_id` int(10) UNSIGNED NOT NULL DEFAULT '0',
  `created` datetime NOT NULL DEFAULT '1000-01-01 00:00:00',
  PRIMARY KEY (`contactgroup_id`, `contact_id`),
  CONSTRAINT `contactgroup_id_fk_contactgroups` FOREIGN KEY (`contactgroup_id`)
    REFERENCES `contactgroups`(`contactgroup_id`) ON DELETE CASCADE ON UPDATE CASCADE,
  CONSTRAINT `contact_id_fk_contacts` FOREIGN KEY (`contact_id`)
    REFERENCES `contacts`(`contact_id`) ON DELETE CASCADE ON UPDATE CASCADE
) /*!40000 ENGINE=INNODB */;

运行正常