Hiya John,
Welcome to the forum,
First - e-mail addresse, there are various reasons why you will get an error report of the type you describe. When it happens, report those ads using the "report" button on the ad. The moderators will then test the e-mail address.
If the address does not exist, the ad is pulled.
If the address does exist, it is left. The advertiser is advised that some people trying to respond are getting error messages.
Not saying "thanks but no thanks" is ill mannered, ill mannered does not mean they are not genuine, just ill mannered.
Why not post what you consider to be your best reply, and let people take it apart!
Other than that, there is loads of advice around, make sure you are using it.
Kat
Oh dear, some people really do need to grow a brain - and I bet he'll be complaining when no-one replies to him too :doh:
If it's a guy replying to ladies who want a good fucking and licking, yes it's got to be
:grin: :grin: :grin: