NationStates Jolt Archive

Aug 19 00:16:30 postfix/smtpd[14827]: NOQUEUE: reject: RCPT from unknown[213.208.119.243]: 450 Client host rejected: cannot find your hostname, [213.208.119.243]; from=<nation@nationstates2.jolt.co.uk> to=<*@*> proto=ESMTP helo=<nationstates2.jolt.co.uk>

213.208.119.243 lacks a reverse DNS entry as instructed by section "INSTRUCTIONS - Adding a host - Add the reverse IN-ADDR entry" in RFC 1033 (Domain Administrators Operation Guide), i.e.:
INSTRUCTIONS...
Adding a host.

To add a new host to your zone files:

Edit the appropriate zone file for the domain the host is in.

Add an entry for each address of the host.

Optionally add CNAME, HINFO, WKS, and MX records.

Add the reverse IN-ADDR entry for each host address in the
appropriate zone files for each network the host i[s] on.

In addition nationstates2.jolt.co.uk resolves to 195.149.21.9, not 213.208.119.243.

Note: occasionally an ISP thinks the UN e-mail is spam and blocks it. If you don't receive your e-mail within the next 24 hours, try changing your e-mail address to a different account (if possible) and re-applying.

Yeah, we've told Jolt about this.