Antw: Re: From adress must match the smtp clients DNS domain
G.Rappenecker at hs-offenburg.de
Wed Jun 22 15:11:56 CEST 2016
thanks for your suggestion but it seems not to realize my idea. I'll try to describe it better:
When a smtp client with the IP address 188.8.131.52 and the DNS hostname host1.mydomain delivers messages to my postfix/amavis MTA with tcp/25, all the messages must have from-headers and envelope-from-addresses of the form any_user at host1.mydomain. I want to configure my MTA to apply this policy only to the IP 184.108.40.206 or the subnet 220.127.116.11/24
Is there any other advice?
>>> Curtis Maurand <curtis at maurand.com> schrieb am Dienstag, 21. Juni 2016 um 13:16
in Nachricht <2e13bd11-2637-8415-1436-3db349191dd0 at maurand.com>:
> On my system this is done with postfix.
> smtpd_recipient_restrictions = permit_sasl_authenticated,
> smtpd_helo_required = yes
> smtpd_helo_restrictions = permit_mynetworks,
> Statistics since Sunday.
> 104 messages blocked by rbl zen.spamhaus.org
> 33 messages blocked by rbl bl.spamcop.net
> 21 messages blocked by rbl b.barracudacentral.org
> 211 messages quarantined by amavis
> 210 messages blocked by amavis
> 3635 blocked by no reverse DNS
> Hope this helps,
> On 6/16/2016 8:18 AM, Gerhard Rappenecker wrote:
>> Hi all,
>> I want to reject mails from some smtp clients specified by IP or subnet, if
> the from address don't match the clients DNS Domain.
>> Can anyone help me?
>> My environment:
>> postfix 2.11.6
>> I allready posted this message yesterday but it seems something went wrong
> Curtis Maurand
> curtis at maurand.com <mailto:curtis at maurand.com>
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