Mail Queue Administration difficulties

[Thunderbite]

Hi all,

At this moment in my Mail Queue Administration I have 2 emails listing with the following log lines:


2011-10-19 14:20:33 Received from [email protected] H=ip ([ip]) [ip] P=esmtpa A=login:[email protected] S=4921077 [email protected] T="title"
2011-10-19 14:20:35 SMTP error from remote mail server after RCPT TO:<[email protected]>: host mbox2.netikka.net [213.250.81.203]: 450 4.7.1 <unknown[ip]>: Client host rejected: Try again later

2011-10-19 14:20:35 SMTP error from remote mail server after RCPT TO:<[email protected]>: host mbox1.netikka.net [213.250.81.202]: 450 4.7.1 <unknown[ip]>: Client host rejected: Try again later

2011-10-19 14:20:35 [email protected] R=lookuphost T=remote_smtp defer (-44): SMTP error from remote mail server after RCPT TO:<[email protected]>: host mbox1.netikka.net [213.250.81.202]: 450 4.7.1 <unknown[ip]>: Client host rejected: Try again later

2011-10-19 14:39:21 SMTP error from remote mail server after RCPT TO:<[email protected]>: host mbox1.netikka.net [213.250.81.202]: 450 4.7.1 <unknown[ip]>: Client host rejected: Try again later

2011-10-19 14:39:22 SMTP error from remote mail server after RCPT TO:<[email protected]>: host mbox2.netikka.net [213.250.81.203]: 450 4.7.1 <unknown[ip]>: Client host rejected: Try again later

2011-10-19 14:39:22 [email protected] R=lookuphost T=remote_smtp defer (-44): SMTP error from remote mail server after RCPT TO:<[email protected]>: host mbox2.netikka.net [213.250.81.203]: 450 4.7.1 <unknown[ip]>: Client host rejected: Try again later


for privacy and security measures I have replaced the sender and receiver details as well as my server's ip address.

Would anyone be able to explain to me why the emails are not being delivered?

Thanks in advance!
Mark

 

[mr.applesauce]

Ask the host of the domain you are sending to.

 

[SeLLeRoNe]

450 4.7.1 <unknown[ip]>: Client host rejected: Try again later

That's the error and google say:

450 4.7.1 <unknown[***.***.***.***]>: Client host rejected: reverse lookup failure, be patient
(Reverse lookup of the IP address of the sender host failed, or the retrieved reverse name doesn't correspond to the IP address. Please be patient for a while.)

So, your reverse DNS of the IP is not the same of your server hostname.

Regards

 

[Thunderbite]

Thanks for the info SeLLeRoNe.

The reverse dns and hostname match perfectly fine.

I just had another look at the mail queue and now all messages have disappeared. So I guess the problem automagically solved itself.

Thanks again for the input!
Mark