can't email to comcast.net

Hi their i'm new to this site so hope i'm doing this right,so here goes.I'm having problems sending emails to comcast.net email adresses in using incredimail.The failure notice read you must have a reverse DNS to send mail into 450 There is a failure in your reverse DNS lockup.You must have a reverse DNS entry to send into the comcast.net domain,please correct the error.I'm not sure what any of this means......many thanks

 

Are you sending these from a Comcast account or using a different ISP, webmail, etc?

 

Hi i just used the reply button when replying to the comcast email which did not work, [i didn't get the failure notice for 5 days ] doing this with other emails works fine eg .com .co etc...I'm using a different ISP.. ps new to incredimail,i havn't tried with out look express which i also use .

 

This is most likely on problem your ISP's part then, you could try contacting them.

 

I thought maybe that could be the problem i was hoping something simpler.I'll try the out look express and see what happens ..Cheers anyway