Qmail - WBITT's Cooker! From WBITT's Cooker! Introduction. Created: 2. Last Modified: 2. Note: Please read the steps completely before implementing them. Install qmail, ucspi-tcp and ucspi-ssl. Simpson's combined patches. UCSPI-TCP and UCSPI-SSL.Life with qmail is aimed at everyone interested in running qmail. The problem might be that qmail can't handle large name server query. I needed just a ucspi-tcp patch cause qmail/netqmail use tcpserver function. Patch is available here http://www.fefe.de/ucspi/ucspi-tcp. Note that this patch makes qmail use vpopmail libraries while compiling. QMail+Vpopmail+MySQL+MailScanner+ClamAV+SpamAssassin. Dave Sill, Henning Brauer, Peter Samuel, and Russell Nelson have put together a netqmail-1.05 distribution of qmail. I've made a simple patch to qmail-smtpd to. This is not a copy/paste howto. This is a careful comparison of LWQ, QMR and JMS methods to implement a fully functional mail server. The steps shown below were applied on 6. CENTOS 6. 4 . The server is fully functional and is in production now. That is the method followed in Life. With. Qmail. QMR has made a mix of many of these and other qmail installations and created QMR. John Simpson and others have some serious objections on the way QMR is setup. My objective in this document is to provide an easy to follow approach (as easy as QMR), yet confirming to the suggestions and standards of JMS and LWQ and others. Please use force- stop to override. This step is not necessary on servers, which have direct high speed connection to the internet. Qmail + vpopmail + Dovecot . The mails sent to [email protected] are needed just to improve the qmail-send log; read the qmail-extra patch on the purpose. A number of large Internet sites are using qmail: USA.net s outgoing email. Rene Schleicher has written a qmail/vpopmail. Andrew has a patch to netqmail-1.06 with qmail-errmsg logging patch to catch and disconnect. CTS qmail patches Unless. The original patch suggestion by the. Or, better yet, update the entire OS installation. However, Time: :Hi. Res will not be installed. You can use the following command to install it through perl - MCPAN option. MCPAN - e . You should see a “. You can install them after you are done with your base qmail installation . Or you may want to install them before (now). If you want to, you can execute the following two commands to update. This is an optional step though. Then run a loop to check existence of each module, such as. Again, you can install them before you start with Anti- Spam software. But when you do, it will save you from actually downloading the software. When you issue the “perl - MCPAN - e install ....” command, the module will get downloaded and will be saved in the . Since you will be performing these steps as root, you will find them downloaded under /root/. Let's install them too. From here onwards Qmail installation steps will start. So if you want to take a snapshot of your virtual machine, now is the time. This is what we don't want. We will patch qmail- 1. John Simpson's patches. Whereas LWQ asks us to download it in /usr/local/src . Both guides ultimately place daemontools in /package and the first two (qmail and ucspi- tcp) in /var/qmail/*. I will try to be as close to LWQ recommendations. I will also make a directory named /downloads , and will download all the software I will be downloading during this installation, in this location. Remember we have Qmail- 1. John Simpson. We will be careful, and will try to follow LWQ steps. There are, in particular, two files in Qmail source tree, in which QMR pushes some values. Refer to the following code. Don't execute the following two lines blindly. Let's see these files contents from the default source: -. This is the queue subdirectory split. You can't set it above 2. On some systems you can't set it above 1. The default value for this parameter is 2. The default for qmail is 2. Appropriate values depend on the volume of mail handled, OS filesystem efficiency, and other factors, but this should always be a prime number. Scanning todo/ takes longer, if you are using the big- todo patch, because every subdir has to be scanned, instead of just one dir. Reference. http: //www. Bottom- line: For smaller sites / mail- servers/ mail- queues, use the default. For larger sites, you can use larger prime numbers, going all the way to 4. The default value for this parameter is 1. Download John Simpson's latest combined patch from his site: http: //qmail. As you can see below, not a “single” hunk / patch failed! Here they are after patching. This is the queue subdirectory split. You can't set it above 6. If you set it any higher than your system's . Rest no values are changed. You can go ahead and compile qmail. As shown below. cd /usr/local/src/qmail- 1. QMR asks you to run “./config- fast server. However there is no harm in executing any of these two scripts. Means, if you are configuring your server to host emails for the domain example. It should only contain the hostname of your server, such as . There is no fun in doing so, as there are couple of things we still need to do. More- over, the “make cert” method suggested by QMR is wrong and is seriously questioned by JMS. We will deal with certificates at a later stage, when we will add SMTPS service. The programs in the ucspi- tcp package take care of the messy networking details, and allow the programmer or system administrator to concentrate on making their service or client work correctly. Note that we did not do any changes to conf- cc and conf- ld while compiling / building qmail- 1. The programs in the ucspi- tcp package take care of the messy networking details, and allow the programmer or system administrator to concentrate on making their service or client work correctly. It's also possible to use tcpserver to run other TCP- based services, such as IMAP services. If you're running a qmail server, you should definitely understand how tcpserver works. Below is a list of the ucspi- tcp patches I use on my own systems. The tcpserver limits patch. The ucspi- tcp package, like all of DJB's other packages, has an issue with the errno variable when compiled using glibc version 2. CENTOS 5. 3 has glibc 2. The solution is the same as for DJB's other packages as well. Find this line, near the top of the file. Comment this line out, and add the following line below it. If you would rather not edit the file by hand, the patch file can be used to make the change as well. This is necessary because the owners of . With the original patch, when rblsmtpd retrieves a TXT record, it scans the value for the string . You can download the updated patch here: http: //qmail. The tcpserver limits patch, by Matija Nalis, gives tcpserver the ability to reject connections when the server's load average is above a certain number, when more than a certain number of connections are received from the same IP address, or when more than a certain number of connections are received from machines in the same class- C block (i. If you want tcpserver to send a message to the client before dropping their connection, you can configure this by setting a DIEMSG environment variable. However, I did notice a few minor cosmetic issues which I thought needed to be fixed, so I updated the patch. This makes it easy to debug- the error message tells you which environment variable caused the connection to be rejected. This doesn't match the environment variable, which . For the sake of consistency, I changed the . I thought it would be nice to be able to set one message which says something like . However, to avoid breaking older scripts, if one of these new variables is not set, the DIEMSG value will be used instead. As of the time I'm writing this (2. I used as the starting point for my own changes. I also have the CHANGES. README. tcpserver- limits- patch files available, if you want to read them before downloading the patch. So we don't need to change anything in the ucspi- tcp directory. I cannot use the patch suggested by LWQ, as I am not using netqmail- 1. So I will use JMS method and manually edit the error. Also we know that the patch applied to daemontools during QMR installation is in- fact a patch copied from LWQ's distribution. Basically this “errno” patch is exactly the same as it was for ucspi- tcp sotware. We just need to disable a line and introduce another line, exactly as before. So here it goes. cd /package/admin/daemontools- 0. You should be able to see the “svscan” process running on your machine. See the important note below, if you cannot see the svscan process running. But as soon as QMR does this, it goes on an “Install spree” (same as shopping spree) and installs all sorts of software until it reaches it's “Part- 9” where is decides to have mercy on the person doing the install, and finalize the qmail installation. Why did'nt that guy just start the qmail software first and made sure that it worked before moving on to installing bells and whistles ? It is a mystery to me. The cdbmake program will help creating CDB files later on. This package should be installed using the directions on djb's web site. Find. extern int errno. Now compile and install. Also install perl- CDB. This will be used in various log- run scripts created below. The qmail log- run scripts (from LWQ) will create files in this directory, “directly”. QMR deviated a little from this and created three sub directories inside /var/log/qmail: qmail- send, qmail- smtpd, and qmail- pop. JMS acknowledges (http: //qmail. So we will use the QMR log directories. Such as. chown - R qmaill: root /var/log/qmail. R 7. 50 /var/log/qmail. If you check the LWQ run script for qmail- send/log, and qmail- smtpd/log, you will notice that setuidgid program (provided with qmail source code itself), is called with an account name of qmaill. The setuidgid program takes care of the correct ownership of the files being written by the child program it calls. The same is verified/confirmed when LWQ also sets up the log directories and sets up ownership of these files as user qmaill . Also see http: //cr. The /var/qmail/rc file . However for our installation, we'll use the following script and save it as /var/qmail/rc . Using stdout for logging. Using control/defaultdelivery from qmail- local to deliver messages by default. PATH=! Also, QMR places ./Maildir (without quotes) in the /var/qmail/control/defaultdelivery file. That is intended, but an extra slash (/) is what is mentioned in LWQ guide. Normally it doesn't matter; It works both ways. The options are Mailbox or Maildir formats. We are going to use the Maildir format as the default delivery mode, which is more efficient and manageable. For more information about mbox and maildir, see INSTALL. INSTALL. maildir files in /usr/local/src/qmail- 1. It's a feature of the above /var/qmail/rc file. The defaultdelivery argument to qmail- start is the contents of a . Putting these instructions in a separate control file eliminates the need to quote shell metacharacters in the delivery instructions and avoids messy multi- line command arguments.
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