On 10/03/2017 11:54 AM, Darryl Hall wrote: > > I’ve had reports of emails going to BT recipients are being rejected. > Hi,
My experience with BT is that you will need to have SPF records set up for the sender domain if you want to deliver somewhat reliably to BT. For domains without SPF you can get deferred with the message: 421 Too many messages (1.5.7.2) on 2017/10/03 13:39:53 BST from un-validated IP address: INSERT-IP-HERE Please add a SPF record for the domain INSERT-DOMAIN-HERE to your DNS or ask your Broadband Provider / Domain Registrar to do this, we will be unable to deliver email until this is done due to the volume of email being sent from this IP address. Guide for bulk senders www.bt.com/bulksender I suspect this does not solely depend on volume but also on IP reputation (internal to BT, not any RBL) as I've had this happen for only some of the IPs in a cluster where all IPs have been delivering similar volumes towards BT accounts and none are listen in RBLs. -- BR/Mvh. Dan Malm, Systems Engineer, One.com
signature.asc
Description: OpenPGP digital signature
_______________________________________________ mailop mailing list [email protected] https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
