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Grant Taylor
Feb 13, 2018, 6:42:10 PM2/13/18
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Is there a way to configure Sendmail to protect specific email addresses?
I have seen references to "protected recipients" over the years, but it
seems to rely on Class W and (I think) rejecting messages to the
protected recipients that are from senders outside of Class W.
Is there a way in Sendmail (preferably without custom rule sets) to
allow sen...@example.com to email reci...@example.net while blocking
everybody else? Preferably where blocking means rejecting with a custom
SMTP message, ala, error:5.7.1:550 You are not allowed to email the
recipient.
Or is this verging on the territory of needing a milter?
If this does need a milter, do you have any recommendations? My default
would be to finally get around to looking at MIMEdefang.
--
Grant. . . .
unix || die
I have seen references to "protected recipients" over the years, but it
seems to rely on Class W and (I think) rejecting messages to the
protected recipients that are from senders outside of Class W.
Is there a way in Sendmail (preferably without custom rule sets) to
allow sen...@example.com to email reci...@example.net while blocking
everybody else? Preferably where blocking means rejecting with a custom
SMTP message, ala, error:5.7.1:550 You are not allowed to email the
recipient.
Or is this verging on the territory of needing a milter?
If this does need a milter, do you have any recommendations? My default
would be to finally get around to looking at MIMEdefang.
--
Grant. . . .
unix || die
Claus Aßmann
Feb 13, 2018, 8:46:15 PM2/13/18
to
Grant Taylor wrote:
> Is there a way to configure Sendmail to protect specific email addresses?
Of course.
> Is there a way to configure Sendmail to protect specific email addresses?
> I have seen references to "protected recipients" over the years, but it
> seems to rely on Class W and (I think) rejecting messages to the
> protected recipients that are from senders outside of Class W.
> Is there a way in Sendmail (preferably without custom rule sets) to
http://www.sendmail.org/~ca/email/protected.html
> Or is this verging on the territory of needing a milter?
Grant Taylor
Feb 13, 2018, 10:45:22 PM2/13/18
to
On 02/13/2018 06:46 PM, Claus Aßmann wrote:
> Of course.
I would have been surprised if you said otherwise.
> class w, not W.
*nod*
I was going from memory. Case is important.
> That should be trivial to change...
Okay.
> What's wrong with "custom rules"?
Nothing in principal.
In a word, "ignorance" as in mine there of.
> http://www.sendmail.org/~ca/email/protected.html
Thank you for a pointer. I probably glanced at that sometime in the
last 17 years. - I'll give it another, thorough read.
> If you don't want custom rules then you probably need a milter.
If the rules can be integrated as a FEATURE(`…') or a HACK(`…'), then
I'll probably go that route.
Thank you Claus.
> Of course.
I would have been surprised if you said otherwise.
> class w, not W.
*nod*
I was going from memory. Case is important.
> That should be trivial to change...
> What's wrong with "custom rules"?
In a word, "ignorance" as in mine there of.
> http://www.sendmail.org/~ca/email/protected.html
Thank you for a pointer. I probably glanced at that sometime in the
last 17 years. - I'll give it another, thorough read.
> If you don't want custom rules then you probably need a milter.
I'll probably go that route.
Thank you Claus.
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