Re: Proper ACL condition to block failed rDNS lookup

Cyborg via Exim-users <[email protected]>
Newsgroups gmane.mail.exim.user
Message-ID <[email protected]>
Am 16.06.25 um 09:14 schrieb AC via Exim-users:
>
> I've added a rule in acl_smtp_connect to block connections from failed 
> rDNS but occasionally one seemingly slips through. I suspect it's 
> going through a different pathway but why would acl_smtp_connect not 
> block the below event? There's no indication in the logs about "no 
> host name found". Did this go through a different ACL entirely?
>
> SMTP protocol synchronization error (input sent without waiting for 
> greeting): rejected connection from H=[152.32.138.230] I=[10.0.0.6]:25 
> input="\026\003\001\001\027\001"
>

The connect never happend, due to sending SSLv3 on a cleartext port ( 25 ) .

There is nothing you can do here (inside exim), just ignore it.

best regards,
Cyborg


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