Wireshark · Wireshark-users: Re: [Wireshark-users] Network Delay (SMTP)

[Richard Brodie <leogah@xxxxxxxxxxx>]

On 10/30/13 09:30, Roman Gelfand wrote:

> Looking at the tcp stream, below, of a smtp conversation, it appears
> there is 5 second delay before the actual smtp conversation begins.
It could be just a static delay to deter spambots but it might also be 
doing DNSBL
lookups and timing out. Often (but not always) a delay is caused by a 
timeout
on a side channel.

Richard