Ugo Bellavance wrote:
Brett Schroeder wrote:
Ugo Bellavance wrote:
Hi,
I installed sendmail on a centos-4 openvz VM. I set up SMTP-AUTH
and when I try to send mail using this server, there is a big delay in
which my e-mail client (Mozilla Thunderbird) just hangs. The server, on
the other hand, is idle at the same time. It does that no matter if I
use no encryption, TLS, or SSL. When the client is 'hung' sendmail, on
the server side haven't logged anything yet for this connection.
Any idea?
Since nothing is logged on the server, it sounds like there is a
firewall (or
other networking problem) in the way. You should use WireShark (or
tcpdump) on
the client to capture the network traffic.
I disabled the firewall on the server, no luck. I tried sniffing, I see
nothing weird.
5.512292 74.59.221.180 -> 72.55.149.51 TCP 17274 > submission [PSH,
ACK] Seq=350 Ack=10923 Win=17461 Len=53
5.512984 72.55.149.51 -> 74.59.221.180 TCP submission > 17274 [PSH,
ACK] Seq=10923 Ack=403 Win=7504 Len=277
5.724172 74.59.221.180 -> 72.55.149.51 TCP 17274 > submission [ACK]
Seq=403 Ack=11200 Win=17184 Len=0
22.884013 74.59.221.180 -> 72.55.149.51 TCP 17274 > submission [PSH,
ACK] Seq=403 Ack=11200 Win=17184 Len=53
22.884918 72.55.149.51 -> 74.59.221.180 TCP submission > 17274 [PSH,
ACK] Seq=11200 Ack=456 Win=7504 Len=85
22.970714 74.59.221.180 -> 72.55.149.51 TLSv1 Application Data
22.971120 72.55.149.51 -> 74.59.221.180 TLSv1 Application Data
(I removed all lines containing SSH or ssh).
Thanks,
Ugo
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