Re: avoiding overload on port 587
- On Fri, 30 Nov 2012, Robert Schetterer wrote:
> Am 30.11.2012 12:50, schrieb Tomas Macek:Looks great! Where? This will make my work much more easy! ;-)
>> This is really interesting solution (!), hope I will be able also to
>> connect to the syslog's pipe and read the mesages. But I don't know how
>> right now, I still was not studiing this, but I believe, that this would
>> have much bigger performance! Thanks for the idea!
> we will write a small blog about this soon
- 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: