lazarus_
join:2002-08-31
Resolute, NU
3 edits | reply to Smokey
Re: Be honest!!
Why block 25 inbound? |
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IhatemyISP
MM2 Corbski
Premium
join:2003-01-27
Japan | said by lazarus_  :
Why block 25 inbound?
To block open relay servers. |
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rchandra
Stargate S G-1 And Atlantis Fan
Premium
join:2000-11-09
14225-2105
clubs:
| reply to lazarus_
said by lazarus_ :
Why block 25 inbound?
There is no particularly good reason, honestly. About the only reason to do so is if a host is compromised, and the attacker wants a standard promiscuous relay. Relaying can nonetheless be done on a compromised host, as the method of injecting the messages need not take place over port 25.
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English is a difficult enough language to interpret correctly when its rules are followed, let alone when a writer chooses not to follow those rules. Blog is here
Jeopardy! replies REALLY suck! |
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Shady Bimmer
Premium
join:2001-12-03
Northport, NY
clubs:
 ·Verizon FIOS
 ·Optimum Online
| reply to lazarus_
said by lazarus_ :
Why block 25 inbound?
•It is (and has always been) a violation of the TOS
•It helps contain access to open-relays to within OOL netblocks, preventing use from outside OOL.
•Combined with forced use of OOL's mail relays for outbound SMTP helps OOL identify both Spam sources as well as those running SMTP servers as open-relays. |
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