john doe' via blinux-list@xxxxxxxxxx alitoa mmaoni:
What are you talking about, we have no context.
If you are unable to help, just say so. I have enough context and understanding of the subject matter to answer the question. Most receiving mail transport agents reject messages from sending addresses that don't pass a reverse DNS check,, meaning that they look back at the DNS IP for the domain portion of the email address to be sure that the IP points back to a domain. It doesn't need to be the same domain, but it has to point back to a domain of some kind, which is then checked against the SPF on the domain portion of the sending address to be sure that the sending machine is allowed to send from that address. In the case of shellworld.net, host shellworld.net shellworld.net has address 50.116.47.71 shellworld.net mail is handled by 10 mx.shellworld.net.cust.b.hostedemail.com/ Actually, that mx one is the one we're checking. host mx.shellworld.net.cust.b.hostedemail.com mx.shellworld.net.cust.b.hostedemail.com has address 64.98.38.4 4.38.98.64.in-addr.arpa domain name pointer mx.b.hostedemail.com Actually looks right to me. But just for grins: host 50.116.47.71 71.47.116.50.in-addr.arpa domain name pointer users.shellworld.net OK I'm out. Sorry, I can't help, as everything here looks right. You should be able to send mail, and the recipient shouldn't be complaining about PTR records or reverse DNS. But it could be the SPF on shellworld.net, which needs to allow mail from mx.shellworld.net.cust.hostedemail.com. dit +short shellworld.net in TXT "v=spf1 a:shellworld.net services.shellworld.net mx:shellworld.net a:atlas.bondproducts.com a:forward.b.hostedemail.com include:_spf.hostedemail.com ~all" Yes, this is also looking right. No problems from my checks, so I really am out this time. Sorry I couldn't be of any further assistance. ~Kyle Imetumwa kutoka mikono yangu To unsubscribe from this group and stop receiving emails from it, send an email to blinux-list+unsubscribe@xxxxxxxxxx.