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Tag Archives: smtp
Strange Spammer Sightings
I’ve seen a couple of the conversation-spams described in Misspelled nemesis club: A new twist on spam? It looks like they exploit the typically weak moderation practices of many software discussion mailing lists. Do you think they are human-powered? Are … Continue reading
Posted in GNU/Linux
Tagged authenticated, conversations, email, missing*email*address, smtp, spam
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Another Wednesday, Another Joe-Job
Yesterday, another of our mailboxes got joe-jobbed, just like last week. Again, it was one of our Exim servers (yes, one got done along with a qmail last week). Again, it was an address that should never appear as the … Continue reading
Posted in Education, Training and Information, GNU/Linux, ThePhoneCoop, Web Development
Tagged acl, exim, joe job, plesk, smtp, spam, yahoo
1 Comment
Spam Revenge: Stopping Joe-job Floods in qmail
Myself and a colleague were both getting Joe-jobbed yesterday. I had an easy time telling Exim to reject mine at SMTP time, but the colleague receives mail on our only Plesk server, so it’s using qmail. I’ve noticed before that … Continue reading
Is Yahoo Now Even Worse On Spam?
When working on mailservers, I’ve noticed that Yahoo’s mailservers seem to “punish” others by sending code 421 (service not available) for a few minutes for a first report of spam that originated from there, longer for a second report and … Continue reading