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Exchange SOMETIMES rejects mailHi ,
I have the following strange problem: Sometimes, very seldom, my Exchange Server 2003 with SP2 (RPC over HTTPS) rejects external mail to only one or two users in the entire organization. The reject reason in most of the cases is: "Reason Illegal host/domain name found" or "No such user". My server has a public IP, it is the domain controller for the domain, to which the mail is sent, and is a DNS server. I have at about 25 users and no one else experiences such problems. And as usually happens, one of these two users is our COO... Please, help!!! Any ideas, any clues... Thanks What client is the COO using, what protocol is he using to send mail, and to
what server is he connecting? -- Show quoteEd Crowley MVP - Exchange "Protecting the world from PSTs and brick backups!" <vasko.vasi***@gmail.com> wrote in message news:1189683880.900746.310730@57g2000hsv.googlegroups.com... > Hi , > > I have the following strange problem: > > Sometimes, very seldom, my Exchange Server 2003 with SP2 (RPC over > HTTPS) rejects external mail to only one or two users in the entire > organization. The reject reason in most of the cases is: "Reason > Illegal host/domain name found" or "No such user". My server has a > public IP, it is the domain controller for the domain, to which the > mail is sent, and is a DNS server. > > I have at about 25 users and no one else experiences such problems. > > And as usually happens, one of these two users is our COO... > > Please, help!!! Any ideas, any clues... > > Thanks > Hi,
He (and everybody in the organization) is using Outlook 2003. The OS of the server is Windows Server 2003 with SP2 and Exchange 2003 with SP2 is installed on it. The users are connecting through RPC over HTTPS. OWA is also running and fully functional. It is a single server scenario... Thanks Vasil Please post the NDRs.
-- Show quoteEd Crowley MVP - Exchange "Protecting the world from PSTs and brick backups!" <vasko.vasi***@gmail.com> wrote in message news:1190280654.549055.230120@o80g2000hse.googlegroups.com... > Hi, > > He (and everybody in the organization) is using Outlook 2003. The OS > of the server is Windows Server 2003 with SP2 and Exchange 2003 with > SP2 is installed on it. The users are connecting through RPC over > HTTPS. OWA is also running and fully functional. It is a single server > scenario... > > Thanks > Vasil > I would have done this if I could. Unfortunately the complains are
coming from people outside our organization, who are trying to send mail and get error messages. Everytime I sent a test message, it goes through successfuly. I just got the following from a known of mine, who was trying to send mail to that particular user three days ago: "The message cannot be delivered to the following recipient. Recipient address xx***@domain.com. Reason Illegal host/domain name found." That's the best I could do so far. I warned him to request the NDRs from the people next time, when he recieves a complain... Next time someone complains, ask them to open a new message to you and drag
the icon of the NDR into the message body and send it to you. That way, you get the entire NDR in the exact context they're seeing it. -- Show quoteEd Crowley MVP - Exchange "Protecting the world from PSTs and brick backups!" <vasko.vasi***@gmail.com> wrote in message news:1190323713.514059.179430@d55g2000hsg.googlegroups.com... >I would have done this if I could. Unfortunately the complains are > coming from people outside our organization, who are trying to send > mail and get error messages. Everytime I sent a test message, it goes > through successfuly. > > I just got the following from a known of mine, who was trying to send > mail to that particular user three days ago: > > "The message cannot be delivered to the following recipient. Recipient > address xx***@domain.com. Reason Illegal host/domain name found." > > That's the best I could do so far. I warned him to request the NDRs > from the people next time, when he recieves a complain... > One more thing, please check your Internet DNS records and be sure that your
MX record points to only valid SMTP hosts for your domain. The problem you're seeing can occur when you have an MX record with two A records, one for Exchange and the other one invalid, which causes mail to bounce when sent to the invalid host. -- Show quoteEd Crowley MVP - Exchange "Protecting the world from PSTs and brick backups!" <vasko.vasi***@gmail.com> wrote in message news:1190323713.514059.179430@d55g2000hsg.googlegroups.com... >I would have done this if I could. Unfortunately the complains are > coming from people outside our organization, who are trying to send > mail and get error messages. Everytime I sent a test message, it goes > through successfuly. > > I just got the following from a known of mine, who was trying to send > mail to that particular user three days ago: > > "The message cannot be delivered to the following recipient. Recipient > address xx***@domain.com. Reason Illegal host/domain name found." > > That's the best I could do so far. I warned him to request the NDRs > from the people next time, when he recieves a complain... >  |
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