Cannot send to mailing lists - client host rejected: cannot find your hostname

[Olivier Nicole]

> I'm having a minor problem with posting to the list. I have my own  
> mail server using postfix, fetchmail, and courier. I have several  
> domain names, and I'm using one for my mail server.
> 
> In my logs I'm seeing 450 errors for freebsd-questions since around  
> the end of last year, but I did have some dns issues after I moved the  

It would help if you post some logs and return error messages...

Olivier