ruby-talk: I think some posts get lost

[Damphyr]

I posted somehting about wanting code that can mimic cron behaviour a
couple of days back.
I actually posted it twice before I realised that I had accidentally
pushed my pc clock a month forward.
I reset the clock and reposted the email (making sure it had the right
dates etc.) but still that post did not appear.
A later post of mine (about the Logger and simultaneous File/STDOUT
output) did make it to the list.
Any insights? Did I stumble on a spam filter?
Cheers,
V.-