Re: [SLE] Postfix - Sandy - 1 more Q re: /etc/postfix/recepient_check

Sorry, I forgot to change the To: line to Suse..


From: "Per Jessen" <per@xxxxxxxxxxxx>
david rankin wrote:

file. I have several domains resolving to my IP. I am rejecting
certain common system names using the /etc/postfix/recipient_check
scheme Sandy suggested when my server was getting bombarded a while
back. It works great. But as I need to block more and more of these
accounts, I have to make multiple entries for each domain that points
to my server. Is there any syntax I could use in the file that would
reject mail for all domains, say for support@domain without having to
specifically list support@domain1, support@domain2, etc... in the
recipient_check file? My current recipient_check file is:

Use regular expressions.

You've presumably got something like

recipient_check = hash:/etc/postfix/recipient_check


That is correct.

Create a file called /etc/postfix/recipient_check.pcre :

/^support@[domain1|domain2|domain3....]$/ REJECT

or

/^support@/ REJECT


Then change your recipient_check= line to:

recipient_check = pcre:/etc/postfix/recipient_check.pcre

(You can use plain regex's instead if you prefer).


Per, I think you just told me exactly what I needed, but, unfortunately,
I don't seem to be smart enough to understand what it is you just told
me.... I guess the first point I don't understand is "what is the difference
between recipient_check = hash: and recipient_check = prce: ?" The second
point I'm missing is "why can't I just use the existing recepient_check file
and put "support@ reject" in there?"

man postconf says:

hash An indexed file type based on hashing. This is
available
only on systems with support for Berkeley DB databases.

pcre (read-only)
A lookup table based on Perl Compatible Regular
Expres-
sions. The file format is described in pcre_table(5).

Can't I do something similar with hash?? I don't have a clue about perl.
Assembler, Fortran, C, C++ maybe, but definately not perl.....

Thanks!


--
David C. Rankin, J.D., P.E.
RANKIN LAW FIRM, PLLC
510 Ochiltree Street
Nacogdoches, Texas 75961
(936) 715-9333
(936) 715-9339 fax
www.rankinlawfirm.com
--


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