tag:blogger.com,1999:blog-804714437673009003.post8356179175283436399..comments2024-02-23T09:06:13.967+00:00Comments on Dynamoo's Blog: "hello / how are you?" mystery spamUnknownnoreply@blogger.comBlogger3125tag:blogger.com,1999:blog-804714437673009003.post-43238778662938824952010-09-24T15:27:40.079+01:002010-09-24T15:27:40.079+01:00@aetherworld
Actually, you can.. Unix-based syst...@aetherworld <br /><br />Actually, you can.. Unix-based systems tend to reject during the SMTP session with something like a 550 or 554 error code, so this can be detected by the bot sending the spam. <br /><br />If the target system is something like Microsoft Exchange then this accepts *all* mail regardless and then tries to send an "asynchronous bounce" to the (faked) sender address.Conrad Longmorehttps://www.blogger.com/profile/11751822299235747323noreply@blogger.comtag:blogger.com,1999:blog-804714437673009003.post-26531505356519011142010-09-24T10:39:43.595+01:002010-09-24T10:39:43.595+01:00Unfortunately the return path is invalid, so the s...Unfortunately the return path is invalid, so the spammer would never receive the bounce/rejection notice. It can't be that...Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-804714437673009003.post-22820126621870691072010-09-21T01:08:33.098+01:002010-09-21T01:08:33.098+01:00This past saturday morning, about once per hour fr...This past saturday morning, about once per hour from 3 am until 9 am, I got 6 spams from these IP addresses:<br /><br /> 62.24.127.28<br /> 217.203.84.22<br /> 78.3.224.9<br /> 79.115.208.166<br /> 178.90.69.185<br /> 87.252.227.84<br /><br />They were all similar in that:<br /><br />- The subject was simply -> hello<br />- The body was simply -> how are you?<br />- The header sumguy98https://www.blogger.com/profile/15331166808427476054noreply@blogger.com