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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: none <hzcnjkx656@tormails.com> Newsgroups: comp.mail.sendmail Subject: Re: sender rewrining advice Date: Sat, 23 Mar 2024 11:44:53 +0100 Organization: A noiseless patient Spider Lines: 34 Message-ID: <utmbr6$3jccv$1@dont-email.me> References: <ut75od$3k36i$1@dont-email.me> <ut7is6$oeb$1@tncsrv09.home.tnetconsulting.net> <uta80m$c43c$1@dont-email.me> <utdfp4$fs6$1@tncsrv09.home.tnetconsulting.net> <utesd2$1hkni$1@dont-email.me> <utg4du$o00$1@tncsrv09.home.tnetconsulting.net> <uth88c$26nhr$1@dont-email.me> <utlkoe$4ve$1@tncsrv09.home.tnetconsulting.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Sat, 23 Mar 2024 10:44:55 -0000 (UTC) Injection-Info: dont-email.me; posting-host="f0fa1a35156e5c0123aa40acdf8c1b77"; logging-data="3781023"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18q93bQUSyfDY/YwKUGG0aMwf/CNmY8ObZXovVRzHeKmg==" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:WfSQW1LB2WC98RadKGMyZ2g1Ecs= Content-Language: en-GB In-Reply-To: <utlkoe$4ve$1@tncsrv09.home.tnetconsulting.net> Bytes: 2377 >> I have there, access: >> to:test@example.com RELAY > > Do you also have a corresponding REJECT? > > to:@example.com REJECT > > Without the REJECT I would expect Sendmail to accept the message as part > of the relay-domains configuration. > Afaik it is currently like this, I have to put something in the access map to allow it through. Either test@example.com or @example.com on RELAY. Currently I am not using entries like @example.com any more. >> host C, LOCAL is not in the spf records. I think external access is >> even blocked. I had spammers by passing spam blocking on the mx / host >> a and delivering directly to C > > SPF is about the connecting host. > > As such, GuerrillaMail.com will see host B as the connecting host and > check it's IP against SPF records. > > Depending on your configuration, hosts A, B, and C may need to either > have allow list entries or valid SPF information for each other. I want to prevent as much as possible hosts that are allowed to send out email.