|
North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Blocking mail from bad places
>> While its a pretty brute force approach, one method Iâ??m trying is to >> curtail the source of email. In otherwords, if smtp traffic comes from an >> unknown source it gets directed to a sendmail server that intentionally >> rejects the email message (550 with a informational message/url). > 1) You send bounces from spammers to innocent people, whose > addresses have been forged. This is an SMTP reject, not a bounce. It's a lethal variety of greylisting. This technique works great to keep spam out of your mailbox. >3) You are dropping valid emails. Right. It also quite an effective way to be sure you never hear from non-technical users who don't understand your bounce message, and from people like me who don't feel like jumping through your hoops, particularly in a case like this where we're responding to a question you asked. R's, John
|