reverse dns lookup shared websites with localhost mail

Hi all,
One customer complains that mails from the website to users are being bounced by a lot of ISP’s.
Bounce message: < win22.m****here.biz #5.5.0 smtp;553 We do not accept mail from IP addresses without reverse DNS. See Reverse DNS lookup - Wikipedia >

The webapplication currently does not support external smtp mail services, so question is can rdns be implemented for the new IP-space at WACO? Customer claims that before migration no rdns errors occured.

Thanks for your ideas!
Jan-Pieter

rDNS was never done before that I can assure :slight_smile:

the old IP was 204.14.108.1, and you can do a lookup and see, and I can look in the rejected mail logs and see a lot rejected for it :wink:

SO, is it possible, yes, is it something we will do? I guess we can evaluate it and discuss a but, but no promises it will be done. A shame apps don’t support external mail :frowning:

Hi Stephen, thanks for your quick reply.

204.14.108.1 has a rDNS entry: mail.goodandready.info
Assume that this rDNS entry has there been a long time?
Why not list the new WACO IP space in rDNS?

Wikipedia says:

Internet official documents (RFC 1033, RFC 1912 Section 2.1) specify that “Every Internet-reachable host should have a name” and that such names match with a reverse pointer record.

So assume everybody likes to have rDNS for their environment. Of course you get the reseller-discussion, but with m****here and g******** domains I don’t see any real reseller complaints about it.

Thanks!
Jan-Pieter

hrm, if that has rDNS it was there before we got the IP space, as we don’t directly control the rDNS on those ranges (which was always a problem since they would not delegate it to us we had to wait forever on them)

as for the rest, we’ll see. :slight_smile:

Can you put a request a rDNS entry on this specific IP 173.0.129.73 ?
Or do I have to submit a ticket?

I will handle this.