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Inordinate cmd read processes, jamming server

Inordinate cmd read processes, jamming server

Inordinate cmd read processes, jamming server

(OP)
I see these fairly frequently in my process list but they're usually not an actual problem to smooth operation. Today, suddenly, they are. There are a lot of processes that end with cmd read and they just hang out there. I have pasted a few examples from the output of "ps aux", there are actually enough of them to start making my server reject new connections. I expect a large amount of communication to go on with bigfish.com hosts as they are my spam filter providers, but I'd like it if they let my server know when they're done. smile

Can someone explain to me what's actually supposed to be occurring when a process is doing a "cmd read", and what might be going to to prevent the process from ending? I'd tremendously appreciate any help.

root     11149  0.0  0.5   6684  2884 ?        Ss   12:05   0:00 sendmail: rejecting connections on daemon MTA: 50 children, max 50
root     11245  0.0  0.7   6860  3620 ?        S    12:07   0:00 sendmail: server mail-dub.bigfish.com [213.199.154.10] cmd read
root     11247  0.0  0.7   6864  3564 ?        S    12:07   0:00 sendmail: server mail-dub.bigfish.com [213.199.154.10] cmd read
root     11251  0.0  0.6   6856  3556 ?        S    12:07   0:00 sendmail: server mail-dub.bigfish.com [213.199.154.10] cmd read
root     11281  0.0  0.7   6860  3560 ?        S    12:07   0:00 sendmail: server utilnj01.rightnowtech.com [63.240.89.31] cmd read
root     11290  0.0  0.7   6860  3620 ?        S    12:08   0:00 sendmail: server mail-dub.bigfish.com [213.199.154.10] cmd read
root     11319  0.0  0.6   6732  3528 ?        S    12:09   0:00 sendmail: server delfino.haque.net [207.44.236.29] cmd read

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