Re: rejected because of pre-greeting traffic
Victor Duchovni
> Hello All
>
> how can i tell if postfix is sending something before
> 'helo', which is what i assume is causing this:
>
> Oct 3 15:58:40 tuolumne sendmail[13301]:
> j93Mwd9W013301: rejecting commands from me due to
> pre-greeting traffic
>
Easy, Postfix does not do this.
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temper
how can i tell if postfix is sending something before
'helo', which is what i assume is causing this:
Oct 3 15:58:40 tuolumne sendmail[13301]:
j93Mwd9W013301: rejecting commands from me due to
pre-greeting traffic
thanks for any suggestions
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Wietse Venema
> Hello All
>
> how can i tell if postfix is sending something before
> 'helo', which is what i assume is causing this:
>
> Oct 3 15:58:40 tuolumne sendmail[13301]:
> j93Mwd9W013301: rejecting commands from me due to
> pre-greeting traffic
tcpdump, ethereal, ...
Wietse
temper
i think its because he has greet_pause turned on in
sendmail and postifx is not waiting to send helo ?
is there an option in postfix that wold cause this?
k
--- Victor Duchovni
<Victor....@MorganStanley.com> wrote:
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Victor Duchovni
> I think its because he has greet_pause turned on in
> sendmail and postifx is not waiting to send helo ?
> is there an option in postfix that wold cause this?
>
Why are wild guesses necessary? Either you know the answer, or
you don't. Postfix always waits for the greeting and disconnects
sending nothing if the greeting does not arrive in a timely manner
($smtp_helo_timeout).
temper
--- Victor Duchovni
<Victor....@MorganStanley.com> wrote:
> Postfix always waits for the greeting and
> disconnects
> sending nothing if the greeting does not arrive in a
> timely manner
> ($smtp_helo_timeout).
In this case it did not. Do you know why?
k
Magnus Bäck
temper <temp...@yahoo.com> wrote:
> --- Victor Duchovni <Victor....@MorganStanley.com> wrote:
>
> > Postfix always waits for the greeting and disconnects sending
> > nothing if the greeting does not arrive in a timely manner
> > ($smtp_helo_timeout).
>
> In this case it did not. Do you know why?
Show evidence of this, i.e. a network sniff log that proves that Postfix
made this error.
--
Magnus Bäck
mag...@dsek.lth.se
mouss
>
>Why are wild guesses necessary? Either you know the answer, or
>you don't. Postfix always waits for the greeting and disconnects
>sending nothing if the greeting does not arrive in a timely manner
>($smtp_helo_timeout).
>
>
could be a firewall issue.
Wietse Venema
> <Victor....@MorganStanley.com> wrote:
>
> > Postfix always waits for the greeting and
> > disconnects
> > sending nothing if the greeting does not arrive in a
> > timely manner
> > ($smtp_helo_timeout).
>
>
> In this case it did not. Do you know why?
Show evidence in the form of tcpdump or ethereal data.
Wietse
Wietse Venema
>
> i think its because he has greet_pause turned on in
> sendmail and postifx is not waiting to send helo ?
> is there an option in postfix that wold cause this?
Prove it. Show evidence in the form of tcpdump or ethereal recording.
Wietse
mouss
>In this case it did not. Do you know why?
>
>
do you have a proxy or firewall between the postfix and sendmail? These
may modify the flow "state". Even those which call themseleves
transparent proxies are only transparent in the sense that end users
don't need to know about them. admins still see them.
sniff traffic on the postfix box.
if you have access to the sendmail box, try a telnet from the postfix
machine and see if you get the same error.
C. P.
ive lost your original mail but as the replies go get an idea.
if your client is connecting through an antivirus, maybe its putting some
garbage, you can detect it with tcpdump/ethereal as Wietse and others asked
you.
sorry for my "wild guessing", i cant help it :-)
carlos
>i think its because he has greet_pause turned on in
>sendmail and postifx is not waiting to send helo ?
>is there an option in postfix that wold cause this?
> > > Hello All
> > >
> > > how can i tell if postfix is sending something
> > before
> > > 'helo', which is what i assume is causing this:
> > >
> > > Oct 3 15:58:40 tuolumne sendmail[13301]:
> > > j93Mwd9W013301: rejecting commands from me due to
> > > pre-greeting traffic
> > >
> >
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temper
i have been unable to install tcpdump on the machine
in question at this point to fulfill your request.
can anyone suggest what might cause sendmail to get
the following errors from my machine:
Oct 3 15:58:40 tuolumne sendmail[13301]:
j93Mwd9W013301: rejecting commands from
fence.pobox.com+[208.210.124.76] due to pre-greeting
traffic
thank you for your time.
mouss
>i have been unable to install tcpdump on the machine
>in question at this point to fulfill your request.
>can anyone suggest what might cause sendmail to get
>the following errors from my machine:
>
>
some suggestions have already been made.
Victor Duchovni
> temper a ?crit :
There is no code in the Postfix SMTP client to send any data before the
220 banner is read in full. Postfix may *disconnect* from the server
before reading the banner if the server is too slow to send the greeting,
but never will send any data prior to "220 ...<CRLF>".