Did go to the link?
What to do if your email is rejected by craigslist email servers
Is your email is being rejected by our servers with a message like
this?
554 5.7.1 <yourhost.yourdomain.com[10.10.10.1]>: Client host rejected:
please_use_SMTP_relay_of_your_isp,_or_setup_non-generic_dns.
In an effort to curb abuse of our email servers and limit the amount of
spam inflicted upon our users, craigslist does not accept email from
computers with dynamically assigned IP addresses, or hosts that*have
generic DNS*setup.
If you get the above message, here's what to do:
The easiest solution is to use the mail server of your ISP to relay your
email, as they almost certainly have their DNS setup properly in the way
we would like. If you're not sure how to setup your mail client to do
this, please contact your ISP.
For tech folks that want to run their own mail server:
If you have a static IP address and want to be able to send email
through your own mail server, you will need to contact your ISP and have
them setup non-generic DNS for your IP address. Usually this is done via
a PTR record. Note that you'll need a matching A record. Again, the
easiest solution for most end users is to route their outbound email
through the mail server of their ISP.
If these suggestions don't work, some people find it easiest to use one
of the many free web based email systems.
What is generic DNS?
When you make a connection to our servers, we use your IP address to
perform a*reverse lookup*to find the name listed for your computer in
the domain name service. We consider you to have generic DNS if the
hostname returned contains:
* An IP address
* The words pool, dhcp, dynamic
* The words dsl, ppp, pub
* The words server or host
* The words dial or dialup
* The words cable or modem
* The words host, client, node, cust, customer
* Any other indicators that the hostname is not specific to you or
your organization
Still not working?
If you have a static IP address, run a mail server and*do not have
generic DNS*, and are continuing to run into trouble, please send email
to postmas...@craigslist.org. Be sure to include the complete headers
and rejection message, so that we're able to determine exactly what is
happening.
On 12/11/2022 8:05 PM, Remo Mattei wrote:
Hello guys,
I get this error from Craigslist which I have not seen before, any
suggestions?
Thanks,
Remo
Connected to 208.82.238.85 but greeting failed.
Remote host said: 554 [9A5CB1FE-E09B-4C64-88D6-6D987569FF18@mxi6f]
208-53-44-243.italy1.com [208.53.44.243] Please use smtp relay of your
ISP or setup non-generic DNS. See:
http://www.craigslist.org/about/help/generic_DNS
—
Ciao,
Remo
