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Diffstat (limited to 'fetchmail.man')
| -rw-r--r-- | fetchmail.man | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fetchmail.man b/fetchmail.man index 03a72a69..b2165186 100644 --- a/fetchmail.man +++ b/fetchmail.man @@ -642,6 +642,16 @@ to the mailserver. This creates a risk that name/password pairs might be snaffled with a packet sniffer or more sophisticated monitoring software. .PP +Under Linux, if fetchmail is run in daemon mode with the network +inaccessible, each poll leaves a socket allocated but in CLOSE state +(this is visible in netstat(1)'s output). For some reason, these +sockets aren't garbage-collected until \fIfetchmail\fR exits. When +whatever kernel table is involved fills up, fetchmail can no longer +run even if the network is up. This appears \fInot\fR to be a socket +leak in \fIfetchmail\fR, but rather some glitch or misfeature in the system +network code. To avoid this problem, fetchmail commits seppuku after +too many unsuccessful socket opens. +.PP Send comments, bug reports, gripes, and the like to Eric S. Raymond <esr@thyrsus.com>. .SH SEE ALSO |