MDaemon has a built-in function to generate a credential,But does not export this certificate to submit relevant information to a third party verification,So If you want a third party SSL certificate verification unit to apply for credentials by MDaemon,Can refer to Comodo Teaching provided,Through the Windows program to achieve this certreq.exe。
1. Add a plain text file,Enter the following,Coexist as CSRParameters.inf,Among”Subject”and”KeyLength”According to the actual needs modification。
[NewRequest] Subject="CN=mail.example.com,OU=Comodo CA Limited,O=Comodo CA Limited,S=New Jersey,L=Clifton,C=US" KeySpec=1 KeyLength=2048 Exportable=TRUE MachineKeySet=TRUE SMIME=False PrivateKeyArchive=FALSE UserProtected=FALSE UseExistingKeySet=FALSE ProviderName="Microsoft RSA SChannel Cryptographic Provider" ProviderType=12 RequestType=PKCS10 KeyUsage=0xa0 Silent=TRUE [EnhancedKeyUsageExtension] OID=1.3.6.1.5.5.7.3.1
2. Generating input command file .pem。
![](https://it-help.tips/wp/wp-content/uploads/2018/11/20181105a1.png)
3. The resulting profile pem,Application submitted to the website SSL certificate。
4. After obtaining third-party certificate .crt,Like Import Certificate through certreq.exe。
![](https://it-help.tips/wp/wp-content/uploads/2018/11/20181105a2.png)
5. Open MDaemon,Enter "Security" - "Security Settings" - "SSL & TLS」-「MDaemon」。
![](https://it-help.tips/wp/wp-content/uploads/2018/11/20181105a3.png)
6. Check the following two:
Enable SSL, STARTTLS, and STLS
Enable the delicated SSL ports for SMPT, IMAP, POP3 servers
![](https://it-help.tips/wp/wp-content/uploads/2018/11/20181105a4.png)
7. Below you can see just import certificate,If you have multiple credentials,Be sure to click on the certificate you want to use,Press Apply,And click "Restart servers"。
![](https://it-help.tips/wp/wp-content/uploads/2018/11/20181105a5.png)
8. Next to the "Security" - "Security Settings" - "SSL & TLS」-「WordClient (web address)」。
![](https://it-help.tips/wp/wp-content/uploads/2018/11/20181105a6.png)
9. Due to the different transceivers with my Webmail server URL,So there are two application credentials,So WordClient here I want to select another certificate,Press Apply,And click "Restart web server."。
![](https://it-help.tips/wp/wp-content/uploads/2018/11/20181105a7.png)
10. Upon completion of the test can be related settings,Webmail can be seen green lock。
![](https://it-help.tips/wp/wp-content/uploads/2018/11/20181105a8.png)
【參考連結】