postfix

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've searched for a half-hour, and still cannot figure it out. In SIP: Modularizing Language Features there are a number of features which will require explicit "enabling" in Scala 2.10 ( import language.feature ). Amongst them there is postfixOps , to which I just cannot find a reference anywhere. What exactly does this feature allow? 回答1: It allows you to use operator syntax in postfix position. For example List(1,2,3) tail rather than List(1,2,3).tail In this harmless example it is not a problem, but it can lead to ambiguities. This will

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have noticed that although I pass a custom return-path header in mails going through my postfix server, the header gets re-written. I would like to pass my own header or at least construct a header dynamically. This is cause I want to get bounced emails on a specific email address (hence I need to pass in the return-path). Is this possible? 回答1: You have to override message_drop_headers to not include the return-path . message_drop_headers = "bcc, content-length" http://www.postfix.org/postconf.5.html#message_drop_headers 回答2: Have you set

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: My lecturer gave me an assignment to create a program to convert and infix expression to postfix using Stacks. I've made the stack classes and some functions to read the infix expression. But this one function, called convertToPostfix(char * const inFix, char * const postFix) which is responsible to convert the inFix expression in the array inFix to the post fix expression in the array postFix using stacks, is not doing what it suppose to do. Can you guys help me out and tell me what I'm doing wrong? The following is code where the functions

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: int i = 0; boolean b = true; System.out.println(b && !(i++ > 0)) When I compile the above code I get a value true back. But how can that be, since the second part of the argument (since b is true already) basically translates to (0 + 1 > 0) => (1 > 0) which should return true . Then the statement would be true && false , which is false . What am I missing? 回答1: Java behaving correctly :) i++ That is postfix increment. It generated result and then incremented that value later. !(i++ > 0) // now value is still zero i++ will use the previous

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have this error 554 Relay access denied when trying to send email from my outlook client. I can read incoming mails but cannot send. If i connect with telnet localhost 25 i can send external emails, but with outlook client it doesn't work. Here's my postfix and dovecot config : postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no config_directory = /etc/postfix inet_interfaces = all mailbox_size_limit = 0 mydestination = localhost myhostname = mail.mydomain.com mynetworks = 127.0

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Possible Duplicate: What does a type followed by _t (underscore-t) represent? While typing in my IDE (Xcode), autocomplete pops up already-defined words when I'm partway thru entering some variable name. I occasionally see names that have ' _t ' at the end of them. What naming convention is that and what does it mean? Is there a reference document to look up pre- and post-fixes in common use? Searching with the term "postfix" gives me a lot of GoogleNoise about the mail server of the same name. 回答1: The t stands for "type" or "typedef." You

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am getting an error when trying to get the ossec features: email notification. I used my Gmail account for this case. I have tried this tutorial , but i couldn't get any email from that. I got the error log inside with warn Mail not accepted by server . It was located at /var/ossec/logs/ossec.log you could see the log below. 2017/10/06 20:05:18 os_sendmail(1764): WARN: Mail from not accepted by server 2017/10/06 20:05:18 ossec-maild(1223): ERROR: Error Sending email to 74.125.200$ 2017/10/06 20:05:58 ossec-syscheckd: INFO: Starting

简介 postfix是Wietse Venema在IBM的GPL协议之下开发的MTA（邮件传输代理）软件。postfix是Wietse Venema想要为使用最广泛的sendmail提供替代品的一个尝试。在Internet世界中，大部分的电子邮件都是通过sendmail来投递的，大约有100万用户使用sendmail，每天投递上亿封邮件。这真是一个让人吃惊的数字。Postfix试图更快、更容易管理、更安全，同时还与sendmail保持足够的兼容性。 工作原理 客户端通过Outlook软件，向邮件服务器发送一封邮件，邮件服务器会检查是发往本域？还是发往其他域？ 1、如果发送到本域，直接存放到Mailbox中，另外一个用户上线，需要收取这封邮件，需要借助dovecot（dovecot提供的是MRA的功能）软件，通过dovecot进入数据库验证身份，验证通过以后，就可以通过MRA调用POP3或者IMAP4的协议，进入邮箱收取邮件，并且将邮件转发给用户 2、如果发送到其他域，其他MTA。但是转发之前，验证用户身份，是否要为其转发邮件，验证的时候是用到了SASL函数库，用户的信息是放到了数据库中，此时我们需要一个中间层authlib，通过authlib替SASL函数库向数据库进行验证，做“发信认证”，认证通过，允许转发，验证不通过，拒绝转发 3、通过浏览器访问邮件服务器（EXtmall）

linux Redhat6.5 1. 1.1 bind mount /dev/sr0 /mnt rpm -ivh /mnt/Packages/bind-9.8.2-0.17.rc1.el6_4.6.x86_64.rpm 1.2 vim /etc/named.conf options { # #ipv6 # 1.3 zone "benet.com" IN { # # }; 1.4 cd /var/named cp -p named.localhost benet.com.zone vim benet.com.zone $TTL 1D # 1.5 echo "nameserver 192.168.175.101" >> /etc/resolv.conf 1.6 host mail.benet.com 2. 2.1 vim /etc/postfix/main.cf # # # # # # # 2.2 service postfix restart 3. 3.1 rpm -ivh /mnt/Packages/dovecot-2.0.9-7.el6.x86_64.rpm 3.2 vim /etc/dovecot/dovecot.conf # # 3.3 # 3.4 service dovecot start 4. groupadd mailusers passwd zhangsan

案例1：邮件TLS/SSL加密通信 1 案例1：邮件TLS/SSL加密通信 1.1 问题 本案例要求为基于Postfix+Dovecot的邮件服务器提供加密通信支持，主要完成以下任务操作： 为SMTP服务（postfix）添加TLS/SSL加密通信支持 基于dovecot配置POP3s+IMAPS加密通信支持 客户端收发信测试，确保加密的邮件通信可用 1.2 方案 使用两台RHEL7虚拟机，其中svr7作为CA服务器，而mail作为测试用的Postfix+Dovecot邮件服务器。另外可准备一台pc120作为收发邮件的Windows测试机，安装邮件客户端软件或Outlook 2010。 1.3 步骤 实现此案例需要按照如下步骤进行。 步骤一：准备一个简单的Postfix+Dovecot邮件服务器，支持SMTP认证 1） 快速安装邮件相关软件、添加邮箱账号 确认已安装postfix、dovecot、cyrus-sasl软件包,启动saslauthd服务: [root@www ~]# yum -y install postfix dovecot cyrus-sasl .. .. [root@www ~]# vim /etc/sasl2/smtpd.conf pwcheck_method: saslauthd mech_list: plain login [root@www ~]#