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 , , , , , | Leave a comment

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 , , , , , , | 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

Posted in GNU/Linux | Tagged , , , , , , , | 8 Comments

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

Posted in ThePhoneCoop | Tagged , , , , | 13 Comments