shsetr.blogg.se - Smtp spamassassin

SMTP SPAMASSASSIN VERIFICATION
SMTP SPAMASSASSIN LICENSE

Before disconnecting (hard limit), maximum message recipients specify the number of recipients a single message can have before disconnecting and ratelimiting the connection.Maximum message recipients (soft limit): Specifies the limit for the number of recipients a single message can have before rejecting recipient addresses.

SMTP SPAMASSASSIN VERIFICATION

Requires Allow DKIM verification for incoming messages to be enabled.

Reject DKIM failures: Specifies whether or not to reject mail at SMTP time if the DKIM signature of the sender fails validation.

Allow DKIM verification for incoming messages: Specifies whether Exim should verify the signature of incoming mail, even if Exim is not configured to act upon the verification results.

Require RFC-compliant HELO: Specifies whether incoming SMTP connections are required to send a HELO following internet standard format (RFC2821 4.1.1.1).

Require remote (domain) HELO: Specifies whether incoming SMTP connections are required to send a HELO that does not match the server's local domains.

Require remote (hostname/IP address) HELO: Specifies whether incoming SMTP connections are required to send a HELO that does not match the primary hostname or local IP.

Do not delay the SMTP connections for hosts in the Greylisting "Common Mail Providers" list: Specifies whether hosts listed as "common mail providers" in the greylist should be exempt from introducing delays to the SMTP connection.

Do not delay the SMTP connections for hosts in the Greylisting "Trusted Hosts" list: Specifies whether hosts listed as "trusted hosts" in the greylist should be exempt from introducing delays to the SMTP connection.

Introduce a delay into the SMTP transaction for unknown hosts and messages detected as spam: Specifies whether the SMTP receiver should wait additional seconds to connect when the inbound messages are detected as spam.

Require HELO before MAIL: Specifies whether incoming SMTP connections are required to send HELO before MAIL.

Ratelimit incoming connections with only failed recipients: Specifies whether to enable ratelimiting on incoming SMTP connections that have only been sent to failed recipients five separate times within the past hour.

Apache SpamAssassin: ratelimit spam score threshold: Specifies a spam score threshold for mail sent in from hosts to enable ratelimiting on those hosts.

Ratelimit suspicious SMTP servers: Specifies whether to ratelimit incoming SMTP connections from hosts that have previously attacked this server, have been recently matched on a mailing blacklist (RBLs) or did not set QUIT with the connection.

Enable Apache SpamAssassin for secondary MX domains: Specifies whether mail sent to the primary mail exchanger for domains listed within the secondary MX list will also be scanned with Apache SpamAssassin.

Reject remote mail sent to the server's hostname: Specifies whether or not to reject mail at SMTP time if the recipient's address is to the server's hostname.

Dictionary attack protection: Drops and ratelimits hosts with more than 4 failed recipients to prevent dictionary attacks.

Apache SpamAssassin rejects spam score threshold: Specifies the SpamAssassin score threshold a mail must be detected for it to be rejected at SMTP time.

SMTP SPAMASSASSIN LICENSE

This guide is intended for Hostwinds clients with a Cloud VPS or Dedicated Server with a cPanel license and access to WHM. You can find these configurations in the Exim Configuration Manager located in the Service Configuration category. Web Host Manager (WHM) provides you with configuration options for the Exim mail server.