What are the various merits of putting checks for black listed file extensions in acl_smtp_mime vs putting them in acl_smtp_data? Which way is faster?
acl_check_mime:
# File extension filtering.
deny message = Blacklisted file extension detected ($found_extension)
condition = ${if match \
{${lc:$mime_filename}} \
{\N(\.exe|\.scr|\.vbs|\.pif|\.bat|\.scr|\.lnk|\.com)$\N} \
{1}{0}}
vs
acl_check_content:
deny message = Blacklisted file extension detected ($found_extension)
demime = scr:vbs:bat:lnk:pif:exe:com
smime.p7s
Description: S/MIME cryptographic signature
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