Category: Mail

Install PowerMTA

Posted on December 16, 2020 by ServerOk

Install the requirments

yum install unzip net-tools telnet git gdb -y

1	yum install unzip net-tools telnet git gdb -y

If you already have a mail server remove it.

yum remove postfix -y

1	yum remove postfix -y

If you want to keep current mail server, you can run PowerMTA on a port other than 25.

cd /root/PMTA/
unzip PowerMTA5.0r1.zip
cd /root/PMTA/PowerMTA5.0r1
yum install PowerMTA-5.0r1-201909161531.x86_64.rpm
service pmta stop
service pmtahttp stop
rm -f /usr/sbin/pmtad
rm -f /usr/sbin/pmtahttpd
cd  /root/PMTA/PowerMTA5.0r1/usr/sbin
cp * /usr/sbin
chmod -R 755 /usr/sbin/pmta
chmod -R 755 /usr/sbin/pmtad
chmod -R 755 /usr/sbin/pmtahttpd
cp /root/PMTA/PowerMTA5.0r1/license /etc/pmta

cd /root/PMTA/

unzip PowerMTA5.0r1.zip

cd /root/PMTA/PowerMTA5.0r1

yum install PowerMTA-5.0r1-201909161531.x86_64.rpm

service pmta stop

service pmtahttp stop

rm -f /usr/sbin/pmtad

rm -f /usr/sbin/pmtahttpd

cd /root/PMTA/PowerMTA5.0r1/usr/sbin

cp * /usr/sbin

chmod -R 755 /usr/sbin/pmta

chmod -R 755 /usr/sbin/pmtad

chmod -R 755 /usr/sbin/pmtahttpd

cp /root/PMTA/PowerMTA5.0r1/license /etc/pmta

Restart PowerMTA

service pmta start
service pmtahttp start

1 2	service pmta start service pmtahttp start

If you get any error, run powermta in debug mode

pmtad --debug

1	pmtad --debug

To customoize your PowerMTA install, edit config file […]

To setup IP rotation in PowerMTA, configure multiple IP on the server. Setup rDNS for each of these IP, point a sub domain to these IPs same as the reverse DNS entry. Here is an exable First we need to edit DNS records. Add folowing A records.

pmta1.sevrerok.in    A       176.123.8.12
pmta2.sevrerok.in    A       176.123.8.13 
pmta3.sevrerok.in    A       176.123.8.17

pmta1.sevrerok.in A 176.123.8.12

pmta2.sevrerok.in A 176.123.8.13

pmta3.sevrerok.in A 176.123.8.17

Set up rDNS (reverse DNS/PTR Record) with […]

PowerMTA route mails through another SMTP server for a domain

Posted on December 13, 2020 by ServerOk

If you want to route emils from PowerMTA though another SMTP server, you can use following config. In this example, all outgoing emails to @outlook.com domain will get routed through Amazon SES. Edit PowerMTA config file

vi /etc/pmta/config

1	vi /etc/pmta/config

Add folowing

<domain outlook.com>
    queue-to amazon-ses.route
</domain>

<domain amazon-ses.route>
    auth-username USER_NAME_HERE
    auth-password PASSWORD_HERE
    route email-smtp.us-west-2.amazonaws.com:587
    use-starttls yes
    require-starttls yes
</domain>

queue-to amazon-ses.route

</domain>

auth-username USER_NAME_HERE

auth-password PASSWORD_HERE

route email-smtp.us-west-2.amazonaws.com:587

use-starttls yes

require-starttls yes

</domain>

Restart PowerMTA

systemctl restart pmta

1	systemctl restart pmta

See PowerMTA […]

Enable Web Monitor UI in PowerMTA

Posted on December 13, 2020 by ServerOk

PowerMTA comes with a Web Monitor UI, that will show you some stats about your mail server, also able to run some commands, edit PowerMTA configuration file. To enable Web Monitor UI, you need to white list your IP address in PowerMTA configuration, for this you need a fixed IP Address.

vi /etc/pmta/config

1	vi /etc/pmta/config

Find

http-access 127.0.0.1 monitor
http-access ::1 monitor

1 2	http-access 127.0.0.1 monitor http-access ::1 monitor

Add […]

PowerMTA allow an IP to sent email

Posted on December 13, 2020 (December 13, 2020) by ServerOk

To allow a web server to send email through PowerMTA with out autentication, you need to edit PowerMTA configuration file

vi /etc/pmta/config

1	vi /etc/pmta/config

Add a source entry for the IP address that you need to allow relaying mails

<source IP_ADDRESS/32>
    always-allow-relaying yes
    smtp-service yes
</source>

always-allow-relaying yes

smtp-service yes

</source>

Replace IP_ADDRESS with IP address of web server that you need to allow sending email with out autentication. […]

swaks – command line SMTP testing tool

Posted on December 12, 2020 (December 12, 2020) by ServerOk

swaks is a command line SMTP testing tool available at http://www.jetmore.org/john/code/swaks/ On Debian/Ubuntu, you can install it with

apt install swaks

1	apt install swaks

if you just type swaks, it will ask your email, then sent a mail using MX Record to specified email address. To send email using specific mail sevrer

swaks --to user@example.com --server test-server.example.net

1	swaks --to user@example.com --server test-server.example.net

Deliver a standard test email, requiring CRAM-MD5 […]

Create DKIM in PowerMTA

Posted on December 12, 2020 (December 12, 2020) by ServerOk

To generate DKIM, go to https://www.sparkpost.com/resources/tools/dkim-wizard/ On first text box, enter the domain name that you will be sending email from. For example, if i need to sent email from [email protected], i need to enter serverok.in in this text box. In DomainKey Selector text box, enter name for your DKIM key. This can be any […]

Change SMTP port in PowerMTA

Posted on December 12, 2020 (December 12, 2020) by ServerOk

To change SMTP port in PowerMTA, edit file

vi /etc/pmta/config

1	vi /etc/pmta/config

Find line starting with

smtp-listener

1	smtp-listener

This line specify port used by PowerMTA server. You can change the power on this line. If you need PowerMTA listen to multiple ports, duplicate the line and change port, this will make PowerMTA work using both ports.

smtp-listener 0/0:2525
smtp-listener 0/0:25

1 2	smtp-listener 0/0:2525 smtp-listener 0/0:25

This will […]

Create SMTP user in PowerMTA

Posted on December 12, 2020 (December 12, 2020) by ServerOk

Once you have PowerMTA installed, you need to create SMTP user. To create an SMTP user, edit file

vi /etc/pmta/config

1	vi /etc/pmta/config

Find

#<smtp-user API>
#    password "changeme"
#</smtp-user>

#<smtp-user API>

# password "changeme"

#</smtp-user>

Add below

<smtp-user SMTP_USERNAME_HERE>
    password "SMTP_PASSWORD_HERE"
    source {smtpuser-auth}
</smtp-user>

<source {smtpuser-auth}>
    smtp-service yes
    always-allow-relaying yes
    require-auth true
    process-x-virtual-mta yes
    default-virtual-mta vmta-1
    remove-received-headers true
    #add-received-headers false
    hide-message-source true
</source>

<virtual-mta vmta-1>
    #smtp-source-host 79.137.44.176 smtp1.serverok.in
    #domain-key default,smtp1.serverok.in,/etc/pmta/default.smtp1.serverok.in.pem
    <domain *>
    max-msg-rate 100/h
    </domain>
</virtual-mta>

<smtp-user SMTP_USERNAME_HERE>

password "SMTP_PASSWORD_HERE"

source {smtpuser-auth}

</smtp-user>

smtp-service yes

always-allow-relaying yes

require-auth true

process-x-virtual-mta yes

default-virtual-mta vmta-1

remove-received-headers true

#add-received-headers false

hide-message-source true

</source>

<virtual-mta vmta-1>

#smtp-source-host 79.137.44.176 smtp1.serverok.in

#domain-key default,smtp1.serverok.in,/etc/pmta/default.smtp1.serverok.in.pem

max-msg-rate 100/h

</domain>

</virtual-mta>

In above code, replace SMTP_USERNAME_HERE and SMTP_PASSWORD_HERE with SMTP username and password you need. in vmta-1, domain-key line that is commented out is used to Enable DKIM signing of out going […]

Install PowerMTA

PowerMTA test using telnet

PowerMTA IP Rotation

PowerMTA route mails through another SMTP server for a domain

Enable Web Monitor UI in PowerMTA

PowerMTA allow an IP to sent email

swaks – command line SMTP testing tool

Create DKIM in PowerMTA

Change SMTP port in PowerMTA

Create SMTP user in PowerMTA