Grant Edwards wrote: > > This is also false. > > I used to have mail rejected because the sending domain didn't > have an MX record. After I set up my MX record, those systems > that used to reject mail started to accept mail.
This anecdote based on your experience does not mean it is a "requirement" (as suggested by jkinz) to have an MX record in order to send mail to most mailers. > > Sending email from a domain without an MX record is perfectly > > acceptable. > > That depends. Some mail servers accept it, soem don't. Of course. Some mail servers follow most RFCs while many completely ignore them. To state this is a truism and not under discussion. I simply stated the practice of sending email from a domain with no MX record is perfectly acceptable; I should have qualified this with "on most mail systems". > > And, when you receive email from most major mailers (i.e. > > gmail), the connecting system is not a valid MX. > > I'm not sure what you mean by the phrase "the connecting system > is not a valid MX". The requirement in question is that the > sending domain has an MX record -- I don't think it has > anything to do with the connecting client machine. jkinz mentioned the connecting "system"; that is to say, the connecting client. That client needn't be the MX for the domain from which email is arriving. > Back when I ran a mail server, I would have guessed that 5-10% > of servers required that the sending domain have an MX record. 5-10%. Sounds like the exception rather than the rule or "requirement" :-) -- Sahil Tandon <sa...@tandon.net>
