<div>
Signed mails commonly known as S/MIME do not require any special handling on mail server.<br />
Easiest is to download postfix source rpm and change parameters in .spec file and build a drop-in replacement with parameters you need (none of them has anything to do with signing mails)
</div>


Signed mails commonly known as S/MIME do not require any special handling on mail server.
Easiest is to download postfix source rpm and change parameters in .spec file and build a drop-in replacement with parameters you need (none of them has anything to do with signing mails)

<div>
Is there &nbsp;any guide to do so? I installed Opendkim as this might send signed an email but it is not the case.
</div>


Is there  any guide to do so? I installed Opendkim as this might send signed an email but it is not the case.

<div>
<div class="content wysiwyg-content">
I want to compile Postfix to support sending signed emails, I am using the following on Centos 6.3:<br />
&nbsp; make -f Makefile.init makefiles \<br />
CCARGS='-DNO_NIS \<br />
-DUSE_TLS -I/usr/include \<br />
-DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl \<br />
-DDEF_SERVER_SASL_TYPE=&quot;do<wbr />vecot&quot; \<br />
-DHAS_PCRE -I/usr/include/ &nbsp;\<br />
-DHAS_SSL &nbsp;-I/usr/include/openssl \<br />
-DHAS_MYSQL -I/usr/include/mysql' \<br />
AUXLIBS='-L/usr/lib64/ -lssl -lcrypto -L/usr/lib64/sasl2 -lsasl2 \<br />
-L/usr/lib64/ -lpcre -L/usr/lib/mysql/ -lmysqlclient -lz -lm'
</div>
</div>


I want to compile Postfix to support sending signed emails, I am using the following on Centos 6.3:
  make -f Makefile.init makefiles \
CCARGS='-DNO_NIS \
-DUSE_TLS -I/usr/include \
-DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl \
-DDEF_SERVER_SASL_TYPE="dovecot" \
-DHAS_PCRE -I/usr/include/  \
-DHAS_SSL  -I/usr/include/openssl \
-DHAS_MYSQL -I/usr/include/mysql' \
AUXLIBS='-L/usr/lib64/ -lssl -lcrypto -L/usr/lib64/sasl2 -lsasl2 \
-L/usr/lib64/ -lpcre -L/usr/lib/mysql/ -lmysqlclient -lz -lm'

How to compile postfix to support signed email

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

Kernel programming for Linux operating systems can be done with many different languages; C, C++, Python, Perl and Java, which are some of the most common languages used.There are also many different varieties of Linux, such as Ubuntu, Fedora and OpenSUSE.