RE: [Exim] Require A records for host names in HELOs? {Warni…

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Szerző: Eli
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Címzett: 'Juha Saarinen', 'exim'
Tárgy: RE: [Exim] Require A records for host names in HELOs? {Warning: possible flame war inducing content}
Ah yes... Gregs' god given purpose to enforce his DNS rules and regulations
upon the world :)

I too can't email him due to apparently "broken" reverse dns on my mail
server (it has reverse, just doesn't reverse to the name he expects since
the server hosts more than one task!). However, if he doesn't want our
email, who cares! It's his loss, and probably for the better because
*insert many things here that would ensue many flames and Greg-isms*.

That's 'nuff on that anyways, as I'm sure everyone is overly aware of my
position wrt Greg.

Eli.

-----Original Message-----
From: exim-users-admin@??? [mailto:exim-users-admin@exim.org] On Behalf
Of Juha Saarinen
Sent: Wednesday, February 04, 2004 7:41 PM
To: exim
Subject: [Exim] Require A records for host names in HELOs? {Warning:
possible flame war inducing content}

Greg Woods emailed me off list asking if I was running an open relay
(no, Greg, I am not, and hope you're not either) but when I replied to
his message, it bounced back with :

2004-02-05 12:38:58 1AoWaU-0006o5-1B ** woods@??? R=dnslookup
T=remote_smtp: SMTP error from remote mailer after HELO <hostname>: host
mail.weird.com [204.92.254.2]: 501-fatal error while validating 'HELO'
host name '<hostname>'.\n501-connection rejected from <domain_name>
remote address [ip_address].\n501-Reason given was:\n501 there are no
DNS A records for the hostname '<hostname>'

This is correct, the hostname doesn't have an A record, but a CNAME
record instead. Can't do much about that, unfortunately.

Greg's mailer is the only one that I've seen that behaves like this.
Surely insisting on hosts in HELOs having A records would lead to masses
of bounces? Most HELOs I see aren't even FQDNs.

--
Juha

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