[CentOS] How to handel smtp to public servers - done
m.roth at 5-cent.us
m.roth at 5-cent.usWed Jun 27 14:43:59 UTC 2012
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Götz Reinicke wrote: > Am 27.06.12 16:08, schrieb Tilman Schmidt: >> Am 27.06.2012 11:15, schrieb Götz Reinicke: >>> Am 27.06.12 10:29, schrieb Fajar Priyanto: >> >>>> 1. Many malware have their own smtp and can send spam directly. >>>> To overcome this, block port tcp 25 on your gateway, and only allow >>>> your mailserver. >> >>> Hi, thanks for your suggestion. But for the mentioned clients thats not >>> possible. :/ [...] <snip> > you dont know the resistant to advice of our users .... ;) <snip> > Long story short: I advised the use of port 587 two hours ago. > > FYI since than I had 169 outgoing connections to port 25 and 1 to 587. :) > > cheers . Götz fighting spam and resistant to advice Hey, give 'em a chance. See what it's like after 24 hours. I suppose then you could tell them it's a lottery, and you'll select random users to kick off port 25.... mark
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