MultiSendcon Version History

2026

v3.2.4 (March 17, 2026) — For out-of-office messages Exchange sends with empty SMTP envelope sender, MultiSendcon now replaces the empty sender with the MAIL FROM header field.

v3.2.3 (February 25, 2026) — Detection of VC++ Library v14+ now works correctly. Installation of new SendConnector in Exchange now works even with PowerShell remoting disabled.

2025

v3.2.2 (December 12, 2025) — VC++ Library detection improved for newer Windows Server installations. Admin/service communication no longer on a fixed address to avoid conflicts.

v3.2.1 (July 30, 2025) — New SMTP component for improved TLS compatibility. New Administrator internals logfile with more diagnostic information.

2024

v3.2.0 (December 18, 2024) — Shows all recipients of a multi-recipient message instead of just the first.

v3.1.9 (December 07, 2024) — Better error messages for multi-line SMTP server error responses.

v3.1.8 (August 12, 2024) — Removed forced VC++ Redist installation; added warning in Admin if libraries are missing.

v3.1.7 (July 24, 2024) — Bugfix: Password encryption method incompatible with FIPS-compliant servers replaced with AES encryption.

v3.1.6 (July 17, 2024) — More secure Exchange Sendconnector setup.

v3.1.5 (July 15, 2024) — Added installer for VC++ redist with UI.

v3.1.4 (July 12, 2024) — Extended log file for Exchange send connector configuration installer.

v3.1.3 (July 12, 2024) — Auto-installs missing VC++ Redist.

v3.1.1 (June 12, 2024) — Newest SMTP components fixing ‘220 2.0.0 SMTP server ready’ error with Office 365.

2021

v2.98 (May 23, 2021) — TLS 1.2 and TLS 1.3 support.

2016

v2.93 (September 27, 2016) — Correctly shows first line of multi-line SMTP error messages.

v2.92 (July 12, 2016) — Detection of accessible local IPs improved.

v2.91 (April 19, 2016) — Error handling for extremely large emails.

2015

v2.90 (December 14, 2015) — Email addresses with name part ending in minus sign now accepted.

v2.83 (June 15, 2015) — New: Replace SMTP envelope sender (MAIL FROM) with fixed sender email.

v2.82 (May 29, 2015) — Passwords now stored encrypted (AES) in configuration file.

v2.80 (May 21, 2015) — Emails to multiple recipients no longer split into individual emails.

v2.76 (March 13, 2015) — SMTP timeout configurable per account.

v2.74 (February 25, 2015) — Better error messages for oversized NDRs. Daily log file options. 45x temporary error code retry fix.

v2.71 (January 14, 2015) — New ‘advanced’ page with configurable concurrent sending threads limit.

2014

v2.69 (December 17, 2014) — Improved SSL on port 465. Special handling of ‘421 invalid sender domain’ and ‘421 Too much load’ errors.

v2.64 (August 14, 2014) — New: Default sender address for emails with empty sender spec <>.

v2.60 (April 18, 2014) — New: Multithreading for multiple simultaneous outgoing emails.

v2.52 (March 28, 2014) — Configurable email address for NDRs.

v2.50 (March 05, 2014) — New: Replacement of sender addresses with a fixed sender address.

2013

v2.00 (June 07, 2013) — Automatically removes temporary X-MultiSendcon header fields before sending.

v1.90 (January 12, 2013) — First public release.