How to reject/detect emails claiming to be from my own domain?

[Valentin Laskov]

На 27.12.2016 в 17:17, Philip Parsons написа:
> Can you explain number 1 more ?
Imagine that
Everyone @example.com use mail.example.com as SMTP server.
Everyone @example.com *must* authenticate before sending mail.
All letters from user at example.com to someone @example.com without 
authentication are rejected

I'm sorry, I can't provide an example config.

>
> On Sat, 2016-12-24 at 09:29 +0200, Valentin Laskov wrote:
>> В 20:00 +0000 на 23.12.2016 (пт), Philip Parsons написа:
>>> I use Mailscanner and Send mail.
>> Hi all,
>>
>> I would suggest one of (or both)
>> 1. setting and relay only after authentication in sendmail
>> 2. these letters usually contain files that MailScanner denies.
>> MailScanner then sends reports to sender/recipient/postmaster about
>> quarantined attachment file. I changed in filename.rules.conf and in
>> archive.filename.rules.conf not to deny these files but to forward to
>> other email address like me at example.com . You must clean this box
>> regularly :)
>>
>> Regards and Happy Holidays
>>
>> Valentin
>>
>>
>> -- 
>> MailScanner mailing list
>> mailscanner at lists.mailscanner.info
>> http://lists.mailscanner.info/mailman/listinfo/mailscanner
>>
>>

-- 
Поздрави!

Валентин Ласков
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