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Mailenable: Email Server Attacks
Status: not solved
 
Problem:
This SMTP activity log file shows the attempted attacks on a mailenable mail server within a short period of minutes.
As you can see, the mail server is massively attacked by login attempts via different names plus the different domain extensions.
 
The problem is that I actually want to allow access only from certain IP addresses.
But in the standard mail servers, this is not so easy.
 
Log-File: Login Attacks
Mail attacks as a login on a mail server
Mailenable: Reduce Email Server Attacks by IP Address
 
 
Not possible: SMTP Inbound IP
The attempt to set the possible IP addresses in SMTP Inbound unfortunately leads to not only the logins being restricted, but also the e-mail input is limited to the IP address range.
Mailenable (Mailserver) ->SMTP->Properties->Inbound->Access Control->Denied ->Except those listed below
Mailenable: Reduce Email Server Attacks by IP Address
 
 
POP IPAddress Restriction
Unfortunately, the restriction via POP->IP Address Connection Restrictions only restricts the collection with an email client such as Outlook.
The direct login attacks are still preserved.
Mailenable: Reduce Email Server Attacks by IP Address
 
 
Relay Privileged IPs
If you try to narrow down the IP address circuits via the SMTP->Relay settings, then you unfortunately open the possibility that anyone from this IP address range can send an email.
The settings in Allow Mail Relay are linked to OR.
Mailenable: Reduce Email Server Attacks by IP Address
 
 
 
Status: NOT SOLVED
 
 
Mailserver
 

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