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policydb and blank lines in smtp-policy.spam break delivery
ZMailer Server 2.99.49p8 #1 ESMTP+IDENT
A potential problem exists if the smtp-policy.spam file retrived
from http://www.webeasy.com:8080/spam/spam_download_table has
blank lines (perhaps due to lynx variants). I encountered this
(a blank line at both the beginning and end of the file), and this
broke policy-builder.sh (fails to run to completion).
An entry like the following may be inserted into smtp-policy.dat
just after the smtp-policy.src file contents:
friends@ = _bulk_mail
(space char ? resulting from a blank line)
which now prevents zmailer from accepting delivery to it's own
domain, (or for any domain for that matter):
2698r mail from: <jmack@Phys.UAlberta.CA>
2698w 250 2.1.0 Sender syntax Ok
2698r rcpt to: <jmack@Phys.UAlberta.CA>
2698w 453 4.7.1 Policy rejection on the target address
A fix is to strip out any blank lines before it builds the db file
lynx -source http://www.webeasy.com:8080/spam/spam_download_table \
> smtp-policy.spam.new && mv smtp-policy.spam.new smtp-policy.spam
# strip off any null lines coming from above:
/zmailer/bin/stripnulls smtp-policy.spam tmp.spam
# Fork off a subshell to do it all...
And the dumb script mentioned is:
# name: stripnulls
# strip nulls off a file $1 and put remainder in $2
# replace $1 with $2 when done
cat /dev/null > $2
for i in `cat $1` ; do
case $i in
echo $i >> $2
mv $2 $1
I'm not a good shell programmer, so my hack is quite crude, but it
seems to work so far.
Matti, a better inline version could be contructed by an expert?
-especially critical to avoid corruption problems with the policydb.
There may be other problems associated with download too which could
leave the file in an un-buildable state.
James S. MacKinnon Office: P-139 Avadh-Bhatia Physics Lab
Team Physics Voice : (403) 492-8226
University of Alberta email : Jim.MacKinnon@Phys.UAlberta.CA
Edmonton, Canada T6G 2N5