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Posted by sibu on March 10, 2009

SpamAssasin failing with “Transport filter process failed (127): unable to execute command”

SpamAssassin was failing to deliver emails with the following message:

SMTP connection from USERNAME lost while reading message data (header)
1H4zGX-0000KH-FH == user@domain.com R=virtual_sa_user T=virtual_sa_userdelivery defer (-24): Transport filter process failed (127): unable to execute command

To fix force a reinstall of the perl module:

perl -MCPAN -e shell
clean Mail::SpamAssassin
install Mail::SpamAssassin

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