Thank you for all your responses. We nailed it down to the dodgy server / Postfix setup. I copied some of the deferred mail queues to another newly setup Postfix server (in the same DMZ) and those mails got sent immediately. So, all mailis are now going out through the new server. Looking good so far.
On Tue, Feb 16, 2010 at 10:26 AM, Jafaruddin Lie <jafaruddin....@gmail.com>wrote: > The size of the email is not big, and I don't think the size of the emails > matter. > No, no attachments, it's mostly just acknowledgement mails. > I have seen emails being blocked at around 3KB, whilst emails around 5KB > got sent whilst a 160KB mail got blocked. > OK, I have disabled tcp_windows_scaling on the server, we'll see if this > keeps on happening. > > > On Tue, Feb 16, 2010 at 10:20 AM, Daniel V. Reinhardt <crypto...@yahoo.com > > wrote: > >> >> >> >> > >> >From: Jafaruddin Lie <jafaruddin....@gmail.com> >> >To: Daniel V. Reinhardt <crypto...@yahoo.com> >> >Sent: Mon, February 15, 2010 10:50:07 PM >> >Subject: Re: Postfix - Timeout While Sending End of Data >> > >> > >> >Currently we have mails going to our internal mail server being queued >> up. >> > >> >So, to answer your question, it's ethernet 100Mbps connection. >> > >> >On Tue, Feb 16, 2010 at 9:36 AM, Daniel V. Reinhardt < >> crypto...@yahoo.com> wrote: >> > >> >>> >> >>>>> >> >>>>>So here's an update: >> >>>>> >> >>>>>1. I have turned off fixup smtp and checked that inspect esmtp or >> inspect smtp is not running. >> >>>>>2. I have also enabled ICMP for both ends from our DMZ mail server >> and internal mail server. It is still happening. >> >>>>> >> >>>>> >> >>>>>Plot thickens huh. >> >> >> >> >> >> >> >>What is your connection speed, and what are you sending? >> >> >> >>>>Thanks, >> >>>> Daniel Reinhardt >> >>>>Website: www.cryptodan.com >> >>>>Email: crypto...@yahoo.com >> >> You didnt answer my question, what is being sent in these e-mails like >> attachments, and if so what size are they. >> >> Can you provide log files and what not? >> >> Also keep replies on the list. >> >> Thanks, >> >> Daniel Reinhardt >> Website: www.cryptodan.com >> Email: crypto...@yahoo.com >> >> >> >> > > > -- > Registered Linux user no. 384430 > -- Registered Linux user no. 384430
