PHWinfo - Afficher un message - DNS check on Connect, getting rid of unresolvable connections

02/10/2006, 23h19

My badDNS milter handles this.
http://highlandsun.com/hyc/badDNS.html

Also my LDAP milter, which is licensed through my company
(www.symas.com)

Joachim Holzfuss wrote:
> Hi,
>
> I am seeing a lot of spam-connections from hosts the DNS servers cannot completely resolve,
> either not getting A-Records or the PTRs or none.
> However, sendmail is happily accepting mails and rejects only, if the From and To addresses fail.
> Why not on already on connection? Is this breaking any RFC Rules?
> Can this be specified in some FEATURE I am missing?
>
> 2 examples:
> sendmail: server adsl-216-44.38-151.net24.it [151.38.44.216] cmd read
> sendmail: k8K9IGeA016259 150.57.rev.ruscomp.net [217.116.57.150] (may be forged): RCPT TO:
>
> I am on sendmail 8.12.10.
>
> Thanks
> Joachim

02/10/2006, 23h19	#2
hyc Messages: n/a Hébergeur:	Re: DNS check on Connect, getting rid of unresolvable connections My badDNS milter handles this. http://highlandsun.com/hyc/badDNS.html Also my LDAP milter, which is licensed through my company (www.symas.com) Joachim Holzfuss wrote: > Hi, > > I am seeing a lot of spam-connections from hosts the DNS servers cannot completely resolve, > either not getting A-Records or the PTRs or none. > However, sendmail is happily accepting mails and rejects only, if the From and To addresses fail. > Why not on already on connection? Is this breaking any RFC Rules? > Can this be specified in some FEATURE I am missing? > > 2 examples: > sendmail: server adsl-216-44.38-151.net24.it [151.38.44.216] cmd read > sendmail: k8K9IGeA016259 150.57.rev.ruscomp.net [217.116.57.150] (may be forged): RCPT TO: > > I am on sendmail 8.12.10. > > Thanks > Joachim