Advanced Setup of hMailServer E-Mail Server — Create and Apply SSL Cert

#hMailServer #SSL #PKI

Full steps can be found at https://i12bretro.github.io/tutorials/0135.html

Prerequisites
   – A XCA PKI database  https://youtu.be/ezzj3x207lQ
 
Create Your SSL Certificate
   01. Launch XCA
   02. Open the PKI database if it is not already (File ≫ Open DataBase), enter password
   03. Click on the Certificates tab, right click on your Intermediate CA certificate
   04. Select New
   05. On the Source tab, make sure Use this Certificate for signing is selected
   06. Verify your Intermediate CA certificate is selected from the drop down
   07. Click the Subject tab
   08. Complete the Distinguished Name section
         internalName: Email Server SSL
         countryName: US
         stateOrProvinceName: Virginia
         localityName: Northern
         organizationName: i12bretro
         organizationUnitName: i12bretro Certificate Authority
         commonName: smtp.i12bretro.local
   09. Click the Generate a New Key button
   10. Enter a name and set the key size to at least 2048
   11. Click Create
   12. Click on the Extensions tab
   13. Select End Entity from the type list
   14. Click Edit next to Subject Alternative Name
   15. Add any DNS or IP addresses that the certificate will identify
         smtp.domain
         imap.domain
         pop3.domain
   16. Update the validity dates to fit your needs
   17. Click the Key Usage tab
   18. Under Key Usage select Digital Signature, Key Encipherment
   19. Under Extended Key Usage select Web Server Authentication
   20. Click the Netscape tab
   21. Select SSL Server
   22. Click OK to create the certificate
 
Exporting Required Files
   01. In XCA, click on the Certificates tab
   02. Right click the SSL certificate ≫ Export ≫ File
   03. Set the file name with a .crt extension and verify the export format is PEM (*.crt)
   04. Click OK
   05. Click the Private Keys tab
   06. Right click the private key generated for the SSL certificate ≫ Export ≫ File
   07. Set the file name with a .key extension and verify the export format is PEM private (*.pem)
   08. Click OK
 
Setting Up SSL in hMailServer
   01. Launch hMailServer Administrator
   02. Select localhost ≫ Click Connect ≫ Login with the administrative password
   03. Expand Settings ≫ Advanced ≫ SSL Certificates ≫ Click Add…
   04. Give the certificate a friendly name
   05. Browse to the certificate and key files exported earlier
         NOTE: The .crt and .key files need to stay on the file system to be read by hMailServer. I place them in the hMailServer installation directory in a real world scenario
   06. Click Save
   07. Expand Settings ≫ Advanced ≫ IP Ranges
   08. Select the LAN IP Range created previously
   09. Check the Require SSL/TLS for authentication box
   10. Click Save
   11. Expand Settings ≫ Advanced ≫ TCP/IP Ports
   12. Click on 0.0.0.0 / 25 / SMTP
   13. Update the port to 465, Select SSL/TLS from the Connection Security dropdown, Select the SSL certificate imported previously
   14. Click Save
   15. Click No to the popup to restart the service
   16. Click on 0.0.0.0 / 143 / IMAP
   17. Update the port to 993, Select SSL/TLS from the Connection Security dropdown, Select the SSL certificate imported previously
   18. Click Save
   19. Click Yesto the popup to restart the service
 
Setting Up SSL in the Client
   01. Launch Thunderbird
   02. Right click on the e-mail address setup previously ≫ Settings ≫ Server Settings
   03. Set Connection security to SSL/TLS
   04. Verify the port updated to 993
   05. Click Outgoing Server (SMTP)
   06. Set Connection security to SSL/TLS
   07. Verify the port updated to 465
   08. Click OK
   09. Click OK
   10. Click Tools ≫ Options ≫ Advanced ≫ Security ≫ Manage Certificates
   11. Click Import…
   12. Browse to the CA-chain.pem file exported earlier
   13. Click OK
 
Testing Your New E-Mail Server
   01. In hMailServer Administrator, Expand Utilities ≫ Server sendout
   02. Select Specific domain and select the domain created earlier from the dropdown
   03. Fill out the form to send a test e-mail ≫ Click Send
   04. Back in Thunderbird, click the Get Messages button
   05. The test email should arrive in the inbox
 

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by i12bretro

linux smtp server