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