ProxSMTP is a SMTP proxy that allows you to reject, change, or log email based on arbitrary criteria. It works well as either a Postfix content filter or transparent proxy.
| Tags | Communications Email Filters |
|---|---|
| Licenses | BSD Revised |
| Operating Systems | POSIX |
| Implementation | C |
Recent releases


Changes: A problem on FreeBSD where stderr wasn't processed when filter didn't read stdin was fixed. Solaris compatibility fixes are included. The "Header" option was put back.


Changes: This version fixes a problem introduced in the last release, which occurred when the 'Header' option was missing.


Changes: It is now possible to add headers to all emails that pass through. A descriptor leak that occurred when connections couldn't be established was fixed along with other small bugs.


Changes: A crash that occurred when a connection couldn't be established was fixed. The startup script was cleaned up.


Changes: Added XCLIENT support, which allows transparent proxies to determine the client IP address, and made some improvements to the documentation.