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Postfix policy service that does rate limiting for senders

Detect illegal UTF-8 encoded headers

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

DKIM key management for keys stored in OpenLDAP

Postfix-Submission policy server that checks sender IPs and blocks senders, if they come from different countries or if they come from too many different IP addresses.

SOGo docker image

Avira SAVAPI command line client

Zabbix template to monitor many common mailserver services

Postfilx milter that rejects/fixes manipulated From:-header

Generate spamassassin and rspamd daily reports for used rules

A quarantine for rspamd using SQL as backend

Detect illegal UTF-8 encoded headers

This is a set of OpenLDAP schema files

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.

SMIMEA Milter

S/MIME signing milter