With immediate effect, our Exchange and Linux mail hosting platforms will no longer send NDR’s (Non-Delivery Receipts) when email is sent to an invalid address. This is to reduce the number of NDR’s we’re sending out to the Internet as a result of spammers sending to invalid addresses (so called “Backscatter”). This change is due to the number of occassions our mail server IP addresses have ended up on Internet blacklists. Preventing this occuring stops legitimate customer email being “bounced” by remote sites, and/or us needing to send mail via alternative routes. Wikipedia has more information on Backscatter.
Service Update: Email NDR’s (Non-Delivery Receipts)
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