Topic: qmail problem

[wdr]

Hi all,

Anybody can help me resolve this problem :

Hi. This is the qmail-send program at mycompanydomainname.com
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<myfirendemail@xxx.xx>:
xxx.xxx.xxx.xx does not like recipient.
Remote host said: 550 5.7.1 <myfriendemail@xxx.xx>... Fix reverse DNS for xx.xxx.xxx.xxx,or use your ISP server Giving up on xxx.xxx.xxx.xx.

Some server refuse my sent email.

Look forward to hearing from all of you soon.
Best regards,
WDR

[bpivk]

Do what you were asked

Fix reverse DNS for xx.xxx.xxx.xxx,or use your ISP server Giving up on xxx.xxx.xxx.xx.

[kruhm]

·  What is Reverse DNS?

Normally you resolve domains to IP addresses. For example, www.domain.tld goes to 192.168.1.1    Reverse DNS is resolving IPs to domains.


·  What do I have to do for correct DNS?

Your DNS must be correct forwards AND backwards.

FORWARDS (done at your name provider, where you bought your name)

Code: [Select]


dig mail.yourdomain.com
responds with: 1.2.3.4


BACKWARDS (done at your internet provider, where you bought your internet connection)

Code: [Select]


dig -x 1.2.3.4
should respond with: mail.yourdomain.com


To fix this, you have to contact your ISP and get them to add a record for reverse dns. This is pretty standard, so they will know exactly what you're talking about, once you get past level 1 tech support.