I'm not addressing the subject of the post, but just picking over the configuration snippet.
On Wed, Aug 01, 2012 at 09:48:45PM -0500, Chad M Stewart wrote: > [root@mta01 /usr/local/etc/postfix]# postconf -n|grep postscreen [snip] > postscreen_client_connection_count_limit = 10 I'm not sure why you did this. Some MTAs, notably qmail, are likely to assault you with many simultaneous connections. This non-default setting might cause difficulty at times in receiving legitimate mail, albeit from impolite clients. > postscreen_dnsbl_sites = sbl.spamhaus.org*1, xbl.spamhaus.org*1, > pbl.spamhaus.org*1 > postscreen_dnsbl_threshold = 1 This makes no sense. You make three queries, risking going over the Spamhaus free limit, or your company's paid limit as the case may be, gaining nothing over doing a single Zen lookup. Consider a higher threshold and enough lower-scored DNSBLs to be able to reach it. I use postscreen_dnsbl_threshold=3, and score Zen 3. My configuration is essentially what I have posted here in the past. > postscreen_greet_banner = "Welcome to our mail server" This is non-compliant and a bad idea. -- http://rob0.nodns4.us/ -- system administration and consulting Offlist GMX mail is seen only if "/dev/rob0" is in the Subject:
