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Spoofing IP Addresses for SMTP Transactions
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Hugo
Jun 4, 2008, 1:41:14 AM6/4/08
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Spammers have been going through our SMTP server; the server accepts
emails from a trusted
white list IPs. I am certain that none of the trusted IP machines are
compromised.
emails from a trusted
white list IPs. I am certain that none of the trusted IP machines are
compromised.
Is it possible to spoof IP address for generating spam? I.e. outgoing
SMTP connections?
It is late in the day so my hypothesis may be crazy: I am assuming
that there a machine(s) that is spoofing IP address in packets for
SMTP connections to our mail server. Can outgoing SMTP transactions
exist without receiving ACK responses back on the packet level?
Hugo
Jun 4, 2008, 1:41:14 AM6/4/08
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endloser
Sep 25, 2008, 1:50:41 AM9/25/08
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configure your mail server to accept messages only on connect back or to
defer them for a few minutes... if they are spoofing it is impossible
for them to tell they were deferred and you could also attempt to block
them by mac at the router level... good luck
defer them for a few minutes... if they are spoofing it is impossible
for them to tell they were deferred and you could also attempt to block
them by mac at the router level... good luck
stermen
May 6, 2009, 3:09:58 PM5/6/09
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Notebooks stocks priced
"endloser" <endl...@endloser.com> ha scritto nel messaggio
news:48db26a6$0$3158$ec3e...@unlimited.usenetmonster.com...
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