[CentOS] slow SMTP-AUTH

Brett Schroeder brett at kinibay.net
Wed Jul 25 23:13:47 UTC 2007

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.

> Regards,
> Ugo
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