There are multiple reason for this behavior of your sharepoint farm. exclusing all other DNS mapping and firewall and proxy configurations there might be a problem in SharePoint Access mapping that will cause the this behaviour. Furthur descrbing the issue… when you type http://abc.company.ae it may redirect to http://d.company .ae ; the second address also you wanted and imagine its in AAM. This behaviour is tottaly because of Aulternate Acess mapping , where you have put abc.company.ae and d.company.ae in same default zone in Alternate Access Mapping. so just delete one entry from Default Zone and put it to another Zone.
MELICK RAJEE BARANASOORIYA | Enterprise Architect