Sending email using TLS 1.2 in .NET ? · EmailArchitect Support

supermistag
50.75% (Neutral)
Newbie Topic Starter

7 years ago

We use easendmail SMTP with the easendmail service to send out mail notifications.

Recently, we have noticed TLS failures due to no shared ciphers or TLS 1.2 support.

Is TLS 1.2 going to be supported?

Edited by moderator 6 years ago | Reason: Not specified

Wanna join the discussion?! Login to your EmailArchitect Support forum account or Register a new forum account

ivan
100% (Exalted)
Administration

7 years ago

Hi, easendmail service uses system default SSL/TLS policy, so it depends on the Windows version, what is your windows version?

ivan
100% (Exalted)
Administration

6 years ago

1. You must use .NET 4.0 or later version
2. add the following codes before SendMail or Connect server.


System.Net.ServicePointManager.SecurityProtocol = 
SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;

3. If above solution doesn't work, try to add the following register keys (very important)


Key  : HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v4.0.30319 
Value: SchUseStrongCrypto
Type: REG_DWORD
Data : 1

Key  : HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\.NETFramework\v4.0.30319
Value: SchUseStrongCrypto
Type: REG_DWORD
Data : 1

ivan
100% (Exalted)
Administration

6 years ago

EASendMail 7.5.0.1 supports TLS 1.2 very well, but if you use it on Windows 2008/7/2008R2, please add TLS support like this:

https://www.microsoft.com/security/blog/2017/07/20/tls-1-2-support-added-to-windows-server-2008/

Important Information:

The EmailArchitect Support uses cookies. By continuing to browse this site, you are agreeing to our use of cookies. More Details Close

Important Information:

EXPLORE TUTORIALS

Send Email

Read and Parse Email

DKIM Solution