CheckMyColours
by Xavier Lacot & 1 other(s)CheckMyColours is a tool for checking foreground and background color combinations of all DOM elements and determining if they provide sufficient contrast when viewed by someone having color deficits.
CheckMyColours is a tool for checking foreground and background color combinations of all DOM elements and determining if they provide sufficient contrast when viewed by someone having color deficits.
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IE NetRenderer allows you to check how a website is rendered by Internet Explorer 7, 6 or 5.5, as seen from a high speed datacenter located in Germany. Just type in a URL in the field above and try it out - it's free!
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]]>PrevURL is for previewing URLs. You may preview normal URLs like http://google.com or shortened URLs like http://is.gd/w.
Tests if a site is down for everyone or just you
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The original qmail-smtpd accepts by default all messages, checking later for the existence of recipients. So, if the message is delivered to not existing recipients, a lot of additional system work and network traffic are generated, with multiple expensive bouncing if the sender is a fake one. chkuser has been developed with the goal to improve the acceptance SMTP phase of qmail-smtpd. qmail-smtpd patched with chkuser may check the existence of e-mail recipients immediately in the SMTP acceptance phase of a message and rejects instantly all messages not directed to existing users, avoiding additional traffic, work and messages bounced more times.
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qmail-smtpd executes as a qmail dedicated user, communicating on the external SMTP side using a socket connection, and talking to the internal processing section using a pipe. This architecture is very secure, as qmail-smtpd is allowed to read/write only what it owns (practically nothing), and, the eventual break of qmail-smtpd by a cracker would have a minimal impact on the safety of the system.
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