Released: Apr 1, 2018

Updates in 2018 R1

Features

• Mail: Added support for TNEF messages with embedded S/MIME entity.
• MIME: Added new encryption and hashing algorithms to CMS capabilities.
• POP3: Optimized memory usage in Pop3MessageInfo class.
• IMAP: Removed Lotus Domino workaround for redundant empty lines (it could trigger an error in other scenarios).
• IMAP: Imap.FolderExists no longer rejects wildcard characters.
• IMAP: Added workaround for Axigen server's strangely-behaved XLIST command.
• EWS: Added EwsSearchParameter.MessageId method to make it possible to search for a specific Message ID using Ews.Search method.
• SSH: Added support for AES/GCM ciphers ('aes128-gcm' and 'aes256-gcm') to SSH client.
• SSH: Added support for ETM MAC ciphers ('hmac-sha2-256-etm' and 'hmac-sha2-512-etm') to SSH client.
• TLS/SSL: Log deprecation warning when using SSL 3.0, which is disabled by default and should no longer be used at all.
• TLS/SSL: Added SslSettings.SslServerNameIndicationEnabled option.
• Cryptography: Added CryptographicCollection<T> as a base for cryptographic collection classes.
• Cryptography: Added SslSettings.SslRenegotiationExtensionEnabled option.
• Cryptography: Added EnhancedCertificateEngine to .NET Compact Framework version to make it possible to supply custom root certification authorities.
• Common: Enabled Certificate/CertificateChain.LoadPfx with AlwaysCng option on .NET Compact Framework 3.9.
• Common: Built-in custom certificate validator on .NET CF no longer unnecessarily validates signature of root CA certificates that are trusted by the OS.

Fixes

• SMTP: Fixed possible NullReferenceException in Smtp.ResolveDomainMX() method.
• EWS: Fixed handling of abandoned sockets.
• Cryptography: Fixed possible NullReferenceException inCertificateRevocationList.GetRevocationReason() method.
• Cryptography: Fixed PFX saving on Mono.
• Cryptography: Fixed "Unable to load DLL 'Bcrypt.dll'" error on Linux with .NET Core.
• Common: Fixed rare race condition in possibly leading to NullReferenceException on .NET Core and UWP platforms.
• Common: Fixed COMException in CertificateChain.BuildFrom method on experimental UWP platform.