295016Re: Disabling user submission on port 25
- Aug 27, 2013
> On 8/26/2013 10:24 PM, John Allen wrote:Much simpler and far much more elegant.
>> I based it something that Noel Jones wrote way back in 2008.
> I doubt that Noel suggested anything like this.
>> Create a file of the networks you wish to deny access to eg.
>> “Deny_Mynetworks_Access” the content of which will be the same networks
>> as those found in the mynetworks parameter of the main.cf file for example:
>> 192.168.0.0/16 REJECT local access not permitted
>> n.n.n.n/28 REJECT local access not permitted
>> [nnnn:nnnn:nnnn::]/64 REJECT local access not permitted
>> remove the permit_mynetworks from all the various
>> smtpd_xxxx_restrictions stanzas of main.cf. Then modify the master.cf by
>> -o smtpd_client_restrictions=hash:Deny_Mynetworks_Access,.....
>> to the smtp service, and add
>> -o smtpd_client_restrictions=permit_mynetworks,.....
>> to the submission service.
> This unnecessary and complex and actually won't work as stated. All
> that is required is a one line change to master.cf and a CIDR file:
> smtp inet n - - - 20 smtpd
> -o smtpd_client_restrictions=check_client_access,\
> 192.168.0.0/16 REJECT local access not permitted
> Aug 27 01:28:21 greer postfix/smtpd: NOQUEUE: reject: RCPT from
> gffx.hardwarefreak.com[192.168.100.53]: 554 5.7.1
> <gffx.hardwarefreak.com[192.168.100.53]>: Client host rejected: local
> access not permitted; from=<stan@...> to=<xxxx@...>
> proto=ESMTP helo=<[192.168.100.53]>
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