nanog mailing list archives
Re: An A record is an MX record and is a missing MX....
From: Adam McKenna <adam () flounder net>
Date: Fri, 4 Apr 2003 11:40:55 -0800
On Thu, Apr 03, 2003 at 05:25:35PM -0500, Richard Irving wrote:
It isn't exactly completely RFC compliant, but, it is only a -=Request=-, eh ?
It is in fact required that an MTA fall back to the A record for a domain if an MX record does not exist. See RFC 2821, Section 5, "Address Resolution and Mail Handling".
Obviously some admins I have encountered are starting to host mailservers for sub-domains and domains without MX entries on their DNS zone records. Relying on the A record alone.Lemmings make a mad dash towards a cliff, every so often, en masse....
This is a fallacy perpetrated by Disney. http://www.snopes.com/disney/films/lemmings.htm --Adam
Current thread:
- RE: Foxnews / MSNBC Akamai issue? Brennan_Murphy (Apr 03)
- Re: Foxnews / MSNBC Akamai issue? Richard Irving (Apr 03)
- An A record is an MX record and is a missing MX.... Gerardo Gregory (Apr 03)
- Re: An A record is an MX record and is a missing MX.... Valdis . Kletnieks (Apr 03)
- Re: An A record is an MX record and is a missing MX.... Craig Partridge (Apr 03)
- Re: An A record is an MX record and is a missing MX.... Will Yardley (Apr 03)
- Re: An A record is an MX record and is a missing MX.... Richard Irving (Apr 03)
- RE: An A record is an MX record and is a missing MX.... Gerardo A. Gregory (Apr 04)
- Re: An A record is an MX record and is a missing MX.... Adam McKenna (Apr 04)
- Re: An A record is an MX record and is a missing MX.... Richard Irving (Apr 04)
- Re: An A record is an MX record and is a missing MX.... Adam McKenna (Apr 04)
- An A record is an MX record and is a missing MX.... Gerardo Gregory (Apr 03)
- Re: Foxnews / MSNBC Akamai issue? Richard Irving (Apr 03)
- Re: An A record is an MX record and is a missing MX.... Indra PRAMANA (Apr 03)
- Re: An A record is an MX record and is a missing MX.... Craig Partridge (Apr 03)
- Re: An A record is an MX record and is a missing MX.... Indra PRAMANA (Apr 03)
- Re: An A record is an MX record and is a missing MX.... Randy Bush (Apr 03)
- Re: An A record is an MX record and is a missing MX.... Owen DeLong (Apr 04)
- Re: An A record is an MX record and is a missing MX.... Michael Moscovitch (Apr 04)