[courier-users] Re: How to control DSNs

[Sam Varshavchik]

Alessandro Vesely writes:

Sam Varshavchik writes:

Alessandro Vesely writes:

Is it possible or recommendable to have positive DSNs only be emitted
for certain users, e.g. internal users, and disable them for others?

The sending mail client is fully capable of specifying which DSNs are to be generated for a particular message.

Yes, in most cases. I meant if such specifications can/should
be overridden, so as to avoid helping spammers confirm addresses.

Spammers do not need DSNs to confirm addresses.

Did you actually ever log a succesful dictionary attack against a Courier server? What happened?




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