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1
vote
3answers
2k views

Sendmail delays on some email addresses

On our webserver, the PHP mail() command consistently hangs on some email addresses but is fine with the majority. It hangs for over 2 mins, by which time the PHP script has lost connection with the ...
5
votes
5answers
3k views

Every single time I use sudo it hangs before completing

Whether I get prompted for a password or not, it hangs between accepting the authentication and executing what I asked for. E.G. sudo ls will hang for about 60 seconds. I'm confused about what might ...
13
votes
6answers
4k views

What tool(s) can I use to simulate a WAN for HTTP traffic?

Sometimes I need to simulate a WAN environment between my client and server. I mean, specifically, from most important to least: Total bandwidth limit, Occasional long (many tens of seconds) delays ...