Issue sending to craigslist

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$Username
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Issue sending to craigslist

Post by $Username » 2010-01-04 19:57

Hey Guys,
I am going crazy trying to solve this. This did work just fine a couple months ago.
I am using hmailserver version 5.3-b1617.


The message I get back is
Remote server replied: 554 5.7.1 <unknown[97.88.241.252]>: Client host rejected:
rDNS/DNS_validation_failed._Please_setup_matching_DNS_and_rDNS_records:_http://www.craigslist.org/about/help/rdns_failure
xabd-4


Now I know that IP 97.88.241.252 returns ntwnet.com for the ptr record.

ping -a 97.88.241.252
Pinging ntwnet.com [97.88.241.252] with 32 bytes of data:


Test: Collect server details
hMailServer version: hMailServer 5.3-B1617
Database type: MySQL

Test: Test IPv6
IPv6 support is available in operating system.

Test: Test outbound port
SMTP relayer not in use. Attempting mail.hmailserver.com:25
Trying to connect to host mail.hmailserver.com...
Trying to connect to TCP/IP address 216.128.26.134 on port 25.
Connected successfully.

Test: Test MX records
Trying to resolve MX records for ntwnet.com...
Host name found: smtp.ntwnet.com

Test: Test local connect
Connecting to TCP/IP address in MX records for local domain domain ntwnet.com...
Trying to connect to host smtp.ntwnet.com...
Trying to connect to TCP/IP address 97.88.241.252 on port 25.
Connected successfully.

$Username
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Re: Issue sending to craigslist

Post by $Username » 2010-01-04 20:00

Ok it looks like I have resolved this issue with creating a rule to remove and replace receive headers.

So instead of saying something like this
Received: from 204.246.8.xx by smtp.ntwnet.com with HTTP; Mon, 4 Jan 2010 11:57:01 -0600

It now just says
Received: from smtp.ntwnet.com ([97.88.241.252])

This is Key for emailing to post on Criagslist as they will check against all receive headers and if something is now lined up. they will then end transmission.

Hope this helps others.

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sheffters
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Re: Issue sending to craigslist

Post by sheffters » 2010-01-04 20:05

Cool,

Minor thing (and since its working probably wrong) ... but shouldnt your ptr be smtp.ntwnet.com to match the server address rather than just the domain?

I've always done mine to match the mail server rather than the domain ... wondering if I'm wrong now!

Cheers

S.

$Username
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Re: Issue sending to craigslist

Post by $Username » 2010-01-04 20:13

In most cases you would want your ptr record to be the server you are using it for.

name server ns1.ntwnet.com or mail server smtp.ntwnet.com in my cases I host both there and went with the root domian.


Brett

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sheffters
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Re: Issue sending to craigslist

Post by sheffters » 2010-01-04 20:18

ah sweet :)

S.

DanCML
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Re: Issue sending to craigslist

Post by DanCML » 2010-01-06 14:24

sheffters is right - the PTR should match the hostname. You may find that when sending out mail your hMailServer will state it's smtp.ntwnet.com in the EHLO command, but the PTR for the IP address is ntwnet.com and this is not a match. Some systems might be happy with it, but at some point you're going to start having mail rejected to rDNS mismatches.

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Re: Issue sending to craigslist

Post by bigworm » 2010-01-08 22:23

Can you post the rule you used?
$Username wrote:Ok it looks like I have resolved this issue with creating a rule to remove and replace receive headers.
hMailServer 5.4 - Build 1946 + ASSP v2.4.3(14246)

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