Denial Of Service attack

[Marcelo Machado]

Thanks Jason and Mark.

I work with some Ubuntu servers with MailScanner installed and I
noticed right now that this error does not occur in version 14.04, but
only in version 16.04.


2017-01-22 15:59 GMT-02:00 Mark Sapiro <mark at msapiro.net>:
> On 01/22/2017 09:42 AM, Marcelo Machado wrote:
>> What´s wrong?
>>
>> Run As User = postfix
>> Run As Group = mtagroup
>> Incoming Queue Dir = /var/spool/postfix/hold
>> Outgoing Queue Dir = /var/spool/postfix/incoming
>> MTA = postfix
>> Incoming Work Group = mtagroup
>> Incoming Work Permissions = 0660
>>
>> Below mtagroup in /etc/group
>> mtagroup:x:1001:clamav,postfix,mail
>
>
> Possibly the issue is a security manager (SELinix, apparmor, etc.)
> policy. If you are running any security manager, you might try
> temporarily disabling it or setting it to report only to see if that
> helps. If so, you will have to figure out how to modify its
> configuration to allow what's being denied.
>
> --
> Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
> San Francisco Bay Area, California    better use your sense - B. Dylan
>
>
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