Re: avoiding overload on port 587
- Tomas Macek:
> There is still one thing, that I don't understand: when exactly theStrange, do you really expect Postfix to flip status immediately
> postfix says that he is not stressed and restarts the processes with
> This is not done when less then default_process_limit smtpd processes are
> run, because I experienced on my system (default_process_limit = 200),
> that smtpd with stress=yes were run when there were just 121 smtpd's run
> in total. Strange?
when load drops under the limit, or do you expect it to behave in
a more rational manner and announce that "peace has come" when the
load has stayed under the limit for some minimal amount of time?
- 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.
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