The Exim 4.93 mail server was released, which included the results of work over the past 10 months.
New opportunities:
- Added variables $tls_in_cipher_std and $tls_out_cipher_std containing cipher suite names corresponding to RFC name.
- New flags have been added to control the display of message identifiers in the log (set via the log_selector setting): “msg_id” (enabled by default) with the message identifier and “msg_id_created” with the identifier generated for the new message.
- Added support for the "case_insensitive" option to the "verify=not_blind" mode to ignore the case of characters during verification.
- Added experimental option EXPERIMENTAL_TLS_RESUME, which provides the ability to resume a previously interrupted TLS connection.
- Added the exim_version option to override the Exim version number string displayed in various places and passed through the $exim_version and $version_number variables.
- Added ${sha2_N:} operator options for N=256, 384, 512.
- Implemented "$r_…" variables set from routing options and available for use in making routing and transport decisions.
- Support for IPv6 has been added to SPF lookup requests.
- When performing checks via DKIM, the ability to filter by types of keys and hashes has been added.
According to the results Research Exim's popularity is almost twice that of Postfix.
Source: linux.org.ru