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internet:mail:exchange:exchange_spam
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Table of Contents
Exchange E-Mail Security
Enable AntiSpam
Whitelist a Sender or Domain
Whitelist an IP Address or Range
Get-IPAllowListEntryAdd-IPAllowListEntryRemove-IPAllowListEntry
Show Mailbox Anti-Spam
Get-MailboxJunkEmailConfiguration -Identity <e-mail address> Get-Mailbox -Identity <e-mail address> | Format-List SCL*,Bypass*,*SenderAuth*
SMTP Relay Filters
http://woshub.com/configure-spam-protection-in-exchange-2013-rbl-providers/
https://blog.ahasayen.com/smtp-relay-exchange-internalsmtpservers/
Get the current list:
Get-TransportConfig | fl InternalSMTPServers
Replace list:
Set-TransportConfig -InternalSMTPServers 192.168.1.0/24, 192.168.5.2
Add to list:
Set-TransportConfig -InternalSMTPServers @{Add="<ip address1>","<ip address2>"...}
DKIM
Exchange 2019 (on-prem) does not verify incoming DKIM signatures or sign outgoing by default.
Receiving
We currently rely on MailCleaner (inbound mail filtering) to verify DKIM signatures as Exchange does not do so.
Sending
This free tool will sign outgoing messages for the domains you specify.
https://opentechtips.com/how-to-configure-dkim-on-exchange-2019-the-simple-way/
internet/mail/exchange/exchange_spam.1714499734.txt.gz · Last modified: 2024/04/30 11:55 by gcooper
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