secretary@cameraitacina.com Date 2010-1-21 17:09 There was a SMTP communication problem with the recipient's email server. Please contact your system administrator. <Copmutername.Domain name #5.5.0 smtp;554 "Refused. You have no reverse DNS entry. Contact abuse@suresupport.com for details."> Only sending mails to this domain, I would get this problem. But I surely do the Reverse DNS entry.Thanks a lot.Jerry

Hi,RDNS can be only setup by your internet provider. When this has been setup properly, you will have a PTR records hostname pointing to your ip adress. Problem solvedRegards from www.windowsadmin.info

Thanks.I know what you mean.But by running command nslookup, set type=ptr, I could see there's the PTR records pointing to my IP address.So please help me again.Thanks.

Please, give me your domain name I will check PTR.http://www.exchangerus.ru

iguzzini.cnthanks.

Hi,RDNS can be only setup by your internet provider. When this has been setup properly, you will have a PTR records hostname pointing to your ip adress. Problem solved Regards from www.windowsadmin.info Could it be the Filter Settings on the recipient's server?

I have checked your IP and PTR. Everything is ok. It could be two problems:1. You can send email through relay server.2. There is a problem with recipient server.Please, send me test email to pnagaev#yandex.ru J need to look at Internet Headers of your e-mail. http://www.exchangerus.ru

Of course. I have seen a lot incorrectly configured recipient's servers.http://www.exchangerus.ru

I have checked your IP and PTR. Everything is ok. It could be two problems:1. You can send email through relay server.2. There is a problem with recipient server.Please, send me test email to pnagaev#yandex.ru J need to look at Internet Headers of your e-mail. http://www.exchangerus.ru Thanks.I'm using Exchange Enterprise 2003, so there's no relay server.

The problem is on your side. In Internet header IP of your e-mail is different that IP of your server. This IP doesn't have PTR.Please, check routing of your e-mail.http://www.exchangerus.ru

I get it.But one strange point, I'm using the Fortigate Router and set one ip address for the Exchange Server in the Virtual IP. But in the mail header, the ip address is just the router address not the virtual ip for the Exchange Server... God!I wonder whether there's any IP settings in the ESM?Thanks very much.Jerry

You should point PTR and A records to external IP which are on router.http://www.exchangerus.ru

You should point PTR and A records to external IP which are on router. http://www.exchangerus.ru thanks.I could create the A record for the external IPin the DNS with an easy.But for the PTR record, how could I add it in the reverse zone or somewhere else?Thanks again.

You should email your provider.http://www.exchangerus.ru