Mailservers
Aug 17, 2007
My current dedicated server's main IP address ends in 88 and the server hostname is my.hostname.com
The IP address for one of my sites, mydomain.com, ends in 89
When I send emails from the mydomain.com account the email headers show that it was received from my.hostname.com (xxx.x.xx.88)
I conducted a test at dnsstuff.com and got the following message
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WARNING: One or more of your mailservers is claiming to be a host other than what it really is mail.mydomain.com claims to be host my.hostname.com [but that host is at xxx.x.xxx.88, not xxx.x.xxx.89].
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I am worried that this situation may lead to my email getting blocked by
anti-spam software.
Technical support tells me that as long as the reverse DNS resolves to the name being reported by the mail server, I should not have an issue.
However I would prefer to be able to send email to a remote server from the IP address of each of my domain names instead of the server's main IP.
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Mar 16, 2007
I have this server with no control panel and dnsreport could not connect to mailservers on all my domains. But the server can send out emails because I'm receiving logwatch emails, etc. I'm also using dnsmadeeasy for my nameservers.
Quote:
ERROR: I could not complete a connection to any of your mailservers!
mail.mydomain.com: Timed out [Last data sent: [Did not connect]]
If this is a timeout problem, note that the DNS report only waits about 40 seconds for responses, so your mail *may* work fine in this case but you will need to use testing tools specifically designed for such situations to be certain.
I tried adding the domains on /etc/mail/local-host-names and restart sendmail but the error is still there.
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Jan 27, 2008
I just got a dedicated server on dedicatednow.com a couple weeks ago and I running my own mailing list from the server.
I have come accross a couple problems already and have been black listed but I know exactly why it is and am working on resolving the issue.
Now... When I check dnsstuff.com for information on my dns...
I get this error in one of the fields:
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WARNING: One or more of your mailservers is claiming to be a host other than what it really is (the SMTP greeting should be a 3-digit code, followed by a space or a dash, then the host name). If your mailserver sends out E-mail using this domain in its EHLO or HELO, your E-mail might get blocked by anti-spam software. This is also a technical violation of RFC821 4.3 (and RFC2821 4.3.1). Note that the hostname given in the SMTP greeting should have an A record pointing back to the same server. Note that this one test may use a cached DNS record.
domain.com claims to be host host.differentdomain.com [but that host is at 555.555.55.10 (may be cached), not 555.555.55.11]. <br />
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It seems like my main hostname is mailing from only one ip address and not the dedicated ip that I've assigned to the domain i'm mailing from.
So i'm wondering if there is a way for me to add an additional hostname that I can use specifically for one domain and ip address that will send mail from that domain only.
While in addition, still using the regular hostname for my shared accounts that will send mail under its own ip all on the same server?
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Apr 3, 2008
I am setting up some website accounts on a new dedicated Linux/cPanel server that has 1 main (or shared IP) and 5 dedicated IP's. From what I understand.. all emails from any domain on the server will be routed through the Main IP of the server, even if the domain that is sending the mail is on one of the dedicated IP's.
I am trying to ensure that my DNS and mail configuration is setup in the most pristine manner possible, to ensure I have the highest email deliverability success as humanly possible (disregarding spf, domainkeys, etc.).
The most important website on this server is abcd.com. And I placed the abcd.com account on one of the dedicated IP addresses. So basically...
The Main (or Shared) IP of the server is 1.1.1.1
abcd.com is on the dedicated IP of 1.1.1.2
Looking at my zone record for abcd.com, I have the following (My host handles DNS so this is what my control panel reads):
Code:
@ A 1.1.1.2
mail A 1.1.1.2
ftp CNAME abcd.com.
www CNAME abcd.com.
@ MX mail.abcd.com.
This all seems pretty standard, but the problem I am seeing is that when I run a DNSreport on abcd.com, I am getting the following warning:
WARNING: One or more of your mailservers is claiming to be a host other than what it really is (the SMTP greeting should be a 3-digit code, followed by a space or a dash, then the host name). If your mailserver sends out E-mail using this domain in its EHLO or HELO, your E-mail might get blocked by anti-spam software.
mail.abcd.com claims to be host host.xyz.com [but that host is at 1.1.1.1, not 1.1.1.2].
How would I go about getting rid of this problem so it doesn't affect my email deliverability. It seems that any website I put on a dedicated IP is going to have this problem. So I am looking for any guidance or suggestions anyone may have on how to remedy this situation.
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