In which context do you use the stressed bʌt and when do you use the unstressed bət? How often is that?
If you know about the website www.forvo.com, I think it's a shortcoming that speakers use only one of the two versions. 


Question: Photo search results in Sharepoint 2010 display wrong server
Answer: If you are CERTAIN that AAM is correct, which is usually the issue. Then you can correct this with Server Name Mapping, though if your AAMs are incorrect, you are only masking the issue. Are you crawling "www.cotoso.com" or "contoso.local" as the start address in your content source?