> On Sep 29, 2016, at 4:43 PM, geekster <chana.a...@gmail.com> wrote:
>
> Sep 29 11:22:55 NY-STARFOX postfix/smtpd[15553]: connect from
> mail-oi0-f41.google.com[209.85.218.41]
> Sep 29 11:22:55 NY-STARFOX postfix/smtpd[15553]: setting up TLS connection
> from mail-oi0-f41.google.com[209.85.218.41]
> Sep 29 11:22:55 NY-STARFOX postfix/smtpd[15553]:
> mail-oi0-f41.google.com[209.85.218.41]:
> TLS cipher list "ALL:!EXPORT:+RC4:@STRENGTH"
> Sep 29 11:22:55 NY-STARFOX postfix/smtpd[15553]: SSL_accept:before/accept
> initialization
> Sep 29 11:22:55 NY-STARFOX postfix/smtpd[15553]: read from 7F8487183D00
> [7F848719D3A0] (11 bytes => -1 (0xFFFFFFFFFFFFFFFF))
> Sep 29 11:22:55 NY-STARFOX postfix/smtpd[15553]: warning:
> network_biopair_interop: error reading 11 bytes from the network:
> Connection reset by peer
Google (or some middle-box between you and Google) dropped the TCP
connection, even before sending the TLS client HELLO. This happened
shortly after the TCP accept on your end. And they did proceed to
send "EHLO" and "STARTTLS", but then disconnected.
*DO NOT* set smtpd_tls_loglevel to values other than "0" or "1",
unless more detailed TLS logging is requested (that'll happen
rather infrequently, more likely a PCAP file would be useful in
such cases).
It is not clear why they disconnected early. Perhaps you have
a firewall or NAT device that's overloaded or otherwise dropping
some TCP connections. No further help is possible if you don't
post the hostname of the problem machine so that others can test
making connections to the same.
--
Viktor.
