Re: Bounce or discard?
In article <1h33k0a.qym68b1rib5ajN%real-not-anti-spam-address@xxxxxxxxxxxxxxxxx>, D.M. Procida wrote:
> How is that different from bouncing?
In the one case your mail server simply returns an error code telling
the sending server that the mail was not accepted, in the other your
mail server accepts the email and then generates an entirely new email
in response to inform the sender of the bounce.
One of the main differences is that in the case of spam with a forged
sender address, the former method simply drops the spam whereas the
latter causes your system to email the spam back to the innocent
victim of the address forgery - i.e. your system generates more spam.
> I'm not sure if I have encountered that option in PostFix.
http://www.postfix.org/LOCAL_RECIPIENT_README.html
.
Relevant Pages
- Re: content filtering
... opinion on experience that's limited to dealing with domestic US ... Considering that the large majority of spam originates from the US, ... Now all you need is some method of identifying the sender. ... 550 code would come to the attention of the mail server admin who could ...
(microsoft.public.exchange.admin) - Re: anti spam sw?
... It only tags suspect mail as spam. ... Bayesian filtering should ALWAYS be the *last* mechanism used to detect spam since it is a guessing scheme based on word weigthing over a historical sample set experienced by just one particular user. ... I also use the MXblocking plug-in because I don't want mails sent from dynamically IP addressed hosts. ... If someone wants to operate their own mail server then let them get a static IP address. ...
(alt.computer.security) - Re: Outlook Express Undeliverable
... If your client is not getting an NDR message back from ... his mail server (which means his sending mail server got rejected during the ... Maybe you have server-side spam filtering enabled and his mails ... sender is infected so his mails could also be infected. ...
(microsoft.public.internet.mail) - Re: How does Cron send email?
... Spam is invariably sent from somebody else's computer ... or through a mail server configured as an open ... Windows machine that uses your ISP e-mail server to connect to. ... have much problems with supporting the SPAM from machines they service ...
(Debian-User) - Re: Unable to reach POP server
... > is up to the Spam Filter to be able to determine if they should be allowed ... The real mail server would never even see or touch the ... from internet mail servers, and users needing to relay their outgoing mail) ... the port WE use to communicate with OUR mail server. ...
(microsoft.public.windows.server.networking) |
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