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Postfilx milter that rejects/fixes manipulated From:-header

Check the envelope-from address and compare it to the header From:-address. Reject mails, if both addresses do not match

SOGo docker image

A quarantine for rspamd using SQL as backend

Postfix policy service that does rate limiting for senders

DKIM key management for keys stored in OpenLDAP

Detect illegal UTF-8 encoded headers

Detect illegal UTF-8 encoded headers

Authserv is a central authentication server that uses different databases as backends to verify user credentials. The communication between clients and server is based on HTTP.

It also can serve additional information up to a successful user lookup.