To test PowerMTA using telnet, run
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telnet localhost 25 |
Now paste following content
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ehlo localhost mail from: admin@smtp1.serverok.in rcpt to: you@your-domain.com data Subject: Testing This is text email. . quit |
To see logs
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tail -f /var/log/pmta/pmta.log |
To see PowerMTA queue, run
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pmta show queues |
See PowerMTA […]
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.
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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 […]
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
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vi /etc/pmta/config |
Add folowing
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<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> |
Restart PowerMTA
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systemctl restart pmta |
See PowerMTA […]
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.
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vi /etc/pmta/config |
Find
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http-access 127.0.0.1 monitor http-access ::1 monitor |
Add […]
To allow a web server to send email through PowerMTA with out autentication, you need to edit PowerMTA configuration file
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vi /etc/pmta/config |
Add a source entry for the IP address that you need to allow relaying mails
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<source IP_ADDRESS/32> 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 is a command line SMTP testing tool available at http://www.jetmore.org/john/code/swaks/ On Debian/Ubuntu, you can install it with
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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
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swaks --to user@example.com --server test-server.example.net |
Deliver a standard test email, requiring CRAM-MD5 […]
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 […]
To change SMTP port in PowerMTA, edit file
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vi /etc/pmta/config |
Find line starting with
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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.
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smtp-listener 0/0:2525 smtp-listener 0/0:25 |
This will […]
Once you have PowerMTA installed, you need to create SMTP user. To create an SMTP user, edit file
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vi /etc/pmta/config |
Find
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#<smtp-user API> # password "changeme" #</smtp-user> |
Add below
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<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> |
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 […]
Exim comes with a utility called “exiwhat” which will display what each instance of exim is currently involved with.
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exiwhat |
The output will look similar to this To monitor the exim log in realtime, you may use the tail command
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tail -f /var/log/exim_mainlog |
See Exim, exiwhat […]