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internet:mail:exchange:exchange_spam [2020/07/11 12:23]
gcooper 		internet:mail:exchange:exchange_spam [2024/04/30 11:57] (current)
gcooper
Line 1: Line 1:
 ====== Exchange E-Mail Security ====== ====== Exchange E-Mail Security ======
 +
 +See also **[[internet:mail:exchange:exchange_track_msg|Using the Exchange Shell to Track Messages]]**
 +
 +===== Enable AntiSpam =====
 +
 +https://www.techieshelp.com/exchange-2013-enable-anti-spam/
  
 ===== Whitelist a Sender or Domain ===== ===== Whitelist a Sender or Domain =====
  
-https://www.informaticar.net/exchange-server-whitelisting-domains-and-email-addresses/+https://www.informaticar.net/exchange-server-whitelisting-domains-and-email-addresses 
 + 
 +===== Whitelist an IP Address or Range ===== 
 + 
 +  * ''Get-IPAllowListEntry'' 
 +  * ''Add-IPAllowListEntry'' 
 +  * ''Remove-IPAllowListEntry'' 
 + 
 +===== Show Mailbox Anti-Spam ===== 
 + 
 +<file> 
 +Get-MailboxJunkEmailConfiguration -Identity <e-mail address> 
 + 
 +Get-Mailbox -Identity <e-mail address> | Format-List SCL*,Bypass*,*SenderAuth* 
 +</file>
  
 ===== SMTP Relay Filters ===== ===== SMTP Relay Filters =====
 +
 +http://woshub.com/configure-spam-protection-in-exchange-2013-rbl-providers/
  
 https://blog.ahasayen.com/smtp-relay-exchange-internalsmtpservers/ https://blog.ahasayen.com/smtp-relay-exchange-internalsmtpservers/
 +
 +https://docs.microsoft.com/en-us/Exchange/antispam-and-antimalware/antispam-protection/antispam-on-mailbox-servers?view=exchserver-2019
 +
 +Get the current list:
  
 <file> <file>
 Get-TransportConfig | fl InternalSMTPServers Get-TransportConfig | fl InternalSMTPServers
 +</file>
  
-Set-TransportConfig+Replace list: 
 + 
 +<file> 
 +Set-TransportConfig -InternalSMTPServers 192.168.1.0/24, 192.168.5.2
 </file> </file>
 +
 +Add to list:
 +
 +<file>
 +Set-TransportConfig -InternalSMTPServers @{Add="<ip address1>","<ip address2>"...}
 +</file>
 +
 +===== DKIM =====
 +
 +<note important>Exchange 2019 (on-prem) does not verify incoming DKIM signatures or sign outgoing by default.</note>
 +
 +==== 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.
 +
 +<note tip>The GUI configuration tool is not added to the Start Menu but is located here: "C:\Program Files\Exchange DkimSigner\Configuration.DkimSigner.exe"</note>
 +
 +https://opentechtips.com/how-to-configure-dkim-on-exchange-2019-the-simple-way/
 +
 +https://github.com/Pro/dkim-exchange/wiki/Installation
 +
 +https://github.com/Pro/dkim-exchange/wiki
 +
internet/mail/exchange/exchange_spam.1594491785.txt.gz · Last modified: 2020/07/11 12:23 by gcooper

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