Portal Home > Knowledgebase > Articles Database > Some Incoming Emails to My Server Are Bouncing
Some Incoming Emails to My Server Are Bouncing
| Posted by JoieDeMort, 02-15-2010, 02:53 PM |
| Hello . . .
I have an Atom 330 2gb with centos and directadmin. After clearing the old spam listings on the IPs from previous users, I'm not and have not been for months on any reputable blacklists (just fiveten), and the reverse dns is set up correctly as far as I know.
The box is running its own 2 nameservers, but the domain in question has a separate ip and has ns1.name.com through ns4.name.com pointing at the ip directly.
Recently I've discovered that emails from linkedin.com, bigtent.com and steampowered.com are bouncing . . . never being delivered to my domain. This is even with spam assassin set to not delete any incoming spam.
I should add that some linkedin.com emails do come through, but their user interface says that the email address has bounced.
bigtent.com used to come through just fine, but no longer does and the invites sent to the domain say "bounced" to the inviter.
After google and WHT searches, I'm stumped. I don't want to have to use gmail.
The server has very limited use . . . essentially personal emails only. I don't see why this should be happening, even with an Atom.
Any suggestions? Please?
|
| Posted by mattle, 02-15-2010, 03:46 PM |
| What's going on in your maillog?
|
| Posted by JoieDeMort, 02-15-2010, 03:54 PM |
| These emails/connections don't even show up in the mail log or exim logs.
|
| Posted by mattle, 02-15-2010, 06:06 PM |
| Sounds like they're either not resolving your domain name, or deciding not to talk to your mail server for some reason. Let's check your DNS/rDNS. To get an unbiases name server, use an online tool such as: http://www.zoneedit.com/lookup.html. Post the results of forward and reverse lookups.
|
| Posted by JoieDeMort, 02-17-2010, 02:42 PM |
| Thank you for your response. Using the link you recommended:
First Domain:
(the obscured parts of the ip are in correct order)
Second Domain:
(the obscured parts of the ip are in correct order)
So . . . any issues here? As I was looking at the CSF configuration last night to more quickly block IPs from a spat of bot-net port-scanning attacks, I wondered if my issue might be related to CSF.
Your further input is requested.
Thank you!
|
| Posted by mattle, 02-17-2010, 04:50 PM |
| Just to confirm...If you look at the "A" records, you're seeing the correct IPs?
|
| Posted by JoieDeMort, 02-17-2010, 05:05 PM |
| Yes. The IPs listed are correct.
|
| Posted by robertk1, 02-17-2010, 06:11 PM |
| Try whitelisting them and retesting. This will help to narrow whether your server could be rejecting them or if their server has a block on emails sent to you....
Not 100% solution, but a clue may develop for you ...
|
| Posted by JoieDeMort, 02-17-2010, 06:31 PM |
| Thanks for the suggestion. I've had their email addresses in the spam assassin whitelist for a very long time, with no benefit.
|
| Posted by mattle, 02-18-2010, 12:51 PM |
| Since in your original message, both sites seem to report that your mail is being bounced, it sounds like a mail server configuration error. If you're not seeing their connections and delivery attempt in your logs, the only thing I can think of would be if you were blocking their IPs in a firewall...I'd check that out, and if your firewall looks ok, you might have to contact tech support from the problem sites to run some manual delivery tests (if they're willing to do so...)
|
| Posted by Joe262, 02-19-2010, 06:38 PM |
| Your MX record as you post it shows an IP address. This is wrong, It needs to show a hostname, which in turn needs to have an A record that shows an IP address.
what wont work:
example.com. IN MX 0.0.0.0
what would:
example.com. IN MX mail.example.com.
mail.example.com. IN A 0.0.0.0
Hope this helps.
|
| Posted by JoieDeMort, 02-26-2010, 04:18 PM |
| Thanks for your input.
When I logged on to add the following, I found that I'd missed Joe's input. If I'm using name.com as the name server to point to a domain hosted at a specific IP, is your comment still valid?
I just logged on to add that I'd looked at checkdns.net again with the following results for both domains in question (I'd never before checked and received an error):
*****
CheckDNS.NET is verifying if NS are alive
NS list mismatch: registration authority reports that domain is hosted on the following servers: 'ns1.name.com; ns2.name.com; ns3.name.com; ns4.name.com', but DNS server ns1.name.com reports domain to be hosted on '[parameter not found]'. Please make sure that you configure the same DNS servers in registrar database and on your DNS
CheckDNS.NET tests mail-servers
Domain mydomain.com has no MX records, but it has A record for domain. This configuration is not recommended
*****
The only thing is . . . the specified MX record clearly exists according to name.com
Is name.com a bad place to use for nameservers? When I've checked previously, it seems that ns1.name.com is frequently giving errors.
Ideas?
|
| Posted by JoieDeMort, 02-26-2010, 04:23 PM |
| Let me add that I have A records pointing to the IP for
mail.domain.com
domain.com
smtp.domain.com
and MX records pointing to the IP for
mail.domain.com
domain.com
I can't remember for sure, but I think I originally set this up based on what cpanel set up for me years ago.
|
| Posted by JoieDeMort, 03-03-2010, 11:12 AM |
| Thank you Joe262! Making your suggested changes magically solved the email issues. Thanks again.
|
Add to Favourites 
Print this Article
Also Read
jkookserv.com (Views: 789)