Re: avoiding overload on port 587
- Reindl Harald skrev den 04-12-2012 08:12:
> Am 04.12.2012 07:58, schrieb Tomas Macek:make it simple to abuse
>>> 2) why would you setup a submission service that doesn't require
>>> from MUAs?
>> It's because they never had to. It is a historical problem. Now wehistorical microsoft have always being the company with hidded
>> have thousands of customers, that >> never had to authenticate, so
>> there is no power to force them to do it now.
features, but ther is more point in not using port 25 then it does not
work or work
thinking of sender-id ?
thay failed to understand there was no point in make ther own license
on using it ?
> than you have lost any game+1
i have seen lego robots playing chess :)
- On Tue, Dec 04, 2012 at 07:46:10AM -0600, /dev/rob0 wrote:
> On Tue, Dec 04, 2012 at 11:59:01PM +1300, Peter wrote:Or better yet: replace it with postscreen.
> > I would still also set up port 587 on the mail.example.com
> > IP as submission as well and try to encourage your users (at
> > least the ones you can) to use port 587 from now on.
> What I would do, on Linux with IPv4 only, is create the submission
> port and use an iptables redirect for the alternate IP address:
> # iptables -vt nat -A PREROUTING -p tcp --dport smtp -d \
> mail.example.com -j REDIRECT --to-port submission
> This saves the overhead (system and administrative) of running
> another smtpd on [mail.example.com]:25; he can leave his "smtp ...
> smtpd" service alone in master.cf.
> I should also add as a reply to Stan in the other subthread: lookTo clarify, I meant that if those Outlook Expresses are not yet
> above at the first quoted paragraph: "Outlook Expresses setup with
> ... default configuration."
> Yikes, bad news, very bad. If not doing content filtering nor
> policy limitation of submission now, he will be soon. And possibly
> losing his job in any case. Tomas is not in a good place right now.
compromised by malware, they will be, soon.
http://rob0.nodns4.us/ -- system administration and consulting
Offlist GMX mail is seen only if "/dev/rob0" is in the Subject: