Ip name lookup failed exchange

Regards, Kusuma.

All forum topics Previous Topic Next Topic. Honored Contributor. Hi Joseph, Thanks for replying. I have tried all that u said.

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Rgds, kusuma. I don't want sendmail to lookup through DNS. And i have also disable dns lookup in sendmail. Do u know why it checks in DNS yet?

Unable to send an email from Plesk server: SMTP service 554 invalid DNS PTR resource record

How to disable that for sendmail alone? But I am looking at sendmail not to look at DNS. I just tried that. The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise.

Relaying denied. IP name lookup failed | cPanel Forums

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Link up two Exchange servers from two different domains (Using Edge Servers - for lab Exchange 2016)

Home Questions Tags Users Unanswered. Asked 8 years, 7 months ago. Active 8 years, 7 months ago. Viewed 12k times.

Relaying Denied

The server's IP is: IP name lookup failed for Return-path: Received: from mail-px0-f Josh Josh 5, 23 23 gold badges 68 68 silver badges bronze badges. It would help to see the contents of the SMTP transaction between your mail server and the rejecting mail server.

Your DNS seems fine to me Report here I believe that the error means that your email server needs to correctly identify itself as the hostname in question webserver Hyppy Hyppy I just had this same issue, and fixed it by matching my mail server banner with the PTR record - as hyppy describes.

This seems like a very likely cause, but I believe my mail server is identifying itself as webserver I'll view a tcpdump to be sure. Sign up or log in Sign up using Google.


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