Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-28 Thread Jonas Eckerman
Benny Pedersen wrote: [About CNAME MX records...] rfc means 'request for comment'. and rfc's change as technology changes. but not much in smtp have changed since first version deployed The RFC in question (RFC2181) is about DNS, not SMTP. Actually, in STD0010 and STD0013 (the standards d

Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-24 Thread Kai Schaetzl
Benny Pedersen wrote on Fri, 24 Oct 2008 02:38:13 +0200 (CEST): > not using cnames olso works 100% of time, but maybe you can show example > where it does not and where you shows cnames solves it nicely ? That's going way off-topic now. Could you (anyone) move this to private, please? Thanks. K

Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-24 Thread mouss
Benny Pedersen a écrit : > On Thu, October 23, 2008 20:43, mouss wrote: > >> subdomains, as used to be the case when all the internet was unix, >> but this is no more the case). > > lets hope thay are deploying dkim next then, it was newer meant to rewrite > any header from sender to tecipient, b

Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-23 Thread Benny Pedersen
On Thu, October 23, 2008 20:43, mouss wrote: > subdomains, as used to be the case when all the internet was unix, > but this is no more the case). lets hope thay are deploying dkim next then, it was newer meant to rewrite any header from sender to tecipient, but still some do this -- Benny Ped

Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-23 Thread Benny Pedersen
On Thu, October 23, 2008 19:29, Michael Scheidell wrote: > we arn't arguing rfc's, and by '99% of the time', actually, it works > 100% of the time unless you use the rfc-ignorant blacklists. being rfc compliant olso works > rfc means 'request for comment'. and rfc's change as technology changes

Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-23 Thread mouss
Michael Scheidell a écrit : > we arn't arguing rfc's, and by '99% of the time', actually, it works > 100% of the time unless you use the rfc-ignorant blacklists. > > rfc means 'request for comment'. and rfc's change as technology changes. > > I don't know if, or, since you are the expert in this

Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-23 Thread SM
At 10:29 23-10-2008, Michael Scheidell wrote: we arn't arguing rfc's, and by '99% of the time', actually, it works 100% of the time unless you use the rfc-ignorant blacklists. If it works 100% of the time for you, what can I say. I don't know if, or, since you are the expert in this, maybe you

Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-23 Thread Michael Scheidell
we arn't arguing rfc's, and by '99% of the time', actually, it works 100% of the time unless you use the rfc-ignorant blacklists. rfc means 'request for comment'. and rfc's change as technology changes. I don't know if, or, since you are the expert in this, maybe you can enlighten us.. What m

Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-23 Thread SM
Hi Michael, At 08:58 23-10-2008, Michael Scheidell wrote: Why? Its being widely used by 'email experts' and hosted email anti-spam companies now. The section of the SMTP standard that discusses about MX records is commonly misinterpreted by some people. Even if CNAMEs are widely used, that

Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-23 Thread Michael Scheidell
> At 15:01 22-10-2008, Michael Scheidell wrote: >> Maybe rfc's need to change.. There is no modern software that can't send to >> a cnamed mx or mx'ed cname, whatever. > > I doubt that it will be changed to accommodate that. It's not only a > matter of software. Such a change would have an impac

Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-22 Thread mouss
Michael Scheidell a écrit : >> 3banatomy.co.kr > > Minor point, rfc's don't require an mx record an a record will satisfy the > rfc's just fine. (and one of the major saas email anti-spam providers used > to use cname records for all their clients.. Yes, they took them off, one at > a time, as c

Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-22 Thread SM
At 15:01 22-10-2008, Michael Scheidell wrote: Maybe rfc's need to change.. There is no modern software that can't send to a cnamed mx or mx'ed cname, whatever. I doubt that it will be changed to accommodate that. It's not only a matter of software. Such a change would have an impact on DNS.

Re: bogusmx [Was: DNS restrictions for a mail server]

2008-10-22 Thread Michael Scheidell
> 3banatomy.co.kr Minor point, rfc's don't require an mx record an a record will satisfy the rfc's just fine. (and one of the major saas email anti-spam providers used to use cname records for all their clients.. Yes, they took them off, one at a time, as clients complianted that they were black

bogusmx [Was: DNS restrictions for a mail server]

2008-10-22 Thread mouss
Matt Kettler a écrit : > Stefan Jakobs wrote: >> On Tuesday 21 October 2008 14:57, Matt Kettler wrote: >> >> >>> In general it is recommended to not point a MX record to a CNAME, but >>> that's just to reduce repetative querries. It is extraordinarily >>> commonplace in the real world, and AFAI