block non delivery report sendmail

Block Non Delivery Report Sendmail

Block List: A publicised list, usually commercial, of ip addresses known to be sources of spam.
Which can be used to create a network block list to filter out mail originating from these addresses.
A block list is also a feature of anti-spam software that allows users to designate ip addresses, domain names and individual email addresses from which no mail will be accepted.
Block lists are also sometimes called blackhole lists or blacklists.
Aspam blocker prevents you from receiving most spam so that you won't have to take the time to delete them.
The code indicates the blocklist's opinion of the address in question, in particular whether the address is implicated in spam and should not be trusted.
If you use gmail you do not need any spam blocker software.
Traceroute is often useful for tracing down the upstream providers of spammers who own their own net blocks.
Your isp probably tries to block most of the spam that is sent your way before it gets a chance to make it into your inbox (which in turn leads to higher isp costs).
If you're serious in fighting spam, consider investing in spam blocker software.