: Mail server rdns setup not right I am running a Zimbra virtual machine on Ubuntu 14.04.4 LTS. I am getting a few emails returned to me with this message: <46e6820d4d3532509d8603ba1546406a@reply.craigslist.org>:

I am running a Zimbra virtual machine on Ubuntu 14.04.4 LTS.

I am getting a few emails returned to me with this message:

<46e6820d4d3532509d8603ba1546406a@reply.craigslist.org>: host
mxia.craigslist.org[208.82.237.85] refused to talk to me: 554
[1F14D9E7-73BD-489F-AC79-4E640DB27254@mxi6a]
coldmail.co.xx.xx.xx.in-addr.arpa [xx.xx.xx.xx] Please setup matching DNS
and rDNS records: www.craigslist.org/about/help/rdns_failure

I run this on a virtual machine running on a dedicated server that I rent. My host assures me that the rdns record is setup correctly to my domain.

When I check on mxtoolbox.com/ they are returning this to me:

Is this something I need to correct on my virtual machine setup or is it something I need to get my host to correct?

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@Hamaas447

You'll have to contact support at your host to have this resolved.

Some hosts - godaddy in particular, even with their so called dedicated servers (don't get me started) - funnel all mail out through their own mail server so rDNS resolves to their server not yours. The only way I was ever able to resolve this was to move to a new hosting company.

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: Mail server rdns setup not right I am running a Zimbra virtual machine on Ubuntu 14.04.4 LTS. I am getting a few emails returned to me with this message: <46e6820d4d3532509d8603ba1546406a@reply.craigslist.org>:

More posts by @Murray432

: Why would my website suddenly require absolute URLs for CSS? So for months on this site I've had paths to my CSS files that look like: /css/syles.css and they've worked fine. Today I updated

: Should I redirect all strange URLs in Google Webmaster Tools? Sometimes strange URLs pop up in Google Webmaster Tools. URLs that I know no one link to, like: http://example.com/apple-app-site-association

: ICANN Registrar Accreditation for Web Hosting Company I have been looking into starting my own web hosting company for several months now and thought I had most the details ironed out when I

: Best Size for Mobile Viewport ( Scaling Down ) I'm building a website that I really need to be visible on mobile devices, so I'm building that at a standard 320px. However this is a little

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