Re: reject_unknown_client

2013-12-07 Thread Jeroen Geilman
On 12/06/2013 08:19 AM, Andreas Kasenides wrote: Thank you for the reply. On 05-12-2013 15:26, Charles Marcus wrote: On 2013-12-05 7:50 AM, Andreas Kasenides andr...@cymail.eu wrote: smtpd_client_restrictions = permit_mynetworks permit_sasl_authenticated reject_unknown_client

reject_unknown_client

2013-12-05 Thread Andreas Kasenides
Hi All! On one of the servers I manage I have smtpd_client_restrictions = permit_mynetworks permit_sasl_authenticated reject_unknown_client permit Obviously this rejects any requests where the DNS (forward or reverse) fails. I am under increasing pressure

Re: reject_unknown_client

2013-12-05 Thread Charles Marcus
On 2013-12-05 7:50 AM, Andreas Kasenides andr...@cymail.eu wrote: smtpd_client_restrictions = permit_mynetworks permit_sasl_authenticated reject_unknown_client permit Obviously this rejects any requests where the DNS (forward or reverse) fails. I am under increasing pressure

Re: reject_unknown_client

2013-12-05 Thread Andreas Kasenides
Thank you for the reply. On 05-12-2013 15:26, Charles Marcus wrote: On 2013-12-05 7:50 AM, Andreas Kasenides andr...@cymail.eu wrote: smtpd_client_restrictions = permit_mynetworks permit_sasl_authenticated reject_unknown_client permit Obviously this rejects any requests where

warn_if_reject reject_unknown_client

2010-08-12 Thread donovan jeffrey j
greetings all day long I see tons of reject warnings from different ips sample reject_warning: RCPT from unknown[65.60.20.157]: 450 Client host rejected: cannot find your hostname, [65.60.20.157]; when I do an nslookup or host that IP it returns a 157.20.60.65.in-addr.arpa domain name pointer

Re: warn_if_reject reject_unknown_client

2010-08-12 Thread Noel Jones
table, not mynetworks. Other than that, this is the right general idea. Whether this is the right place to add the access table depends on where your reject_unknown_client is. The whitelist and reject_unknown_client must be in the same section. -- Noel Jones

Re: warn_if_reject reject_unknown_client

2010-08-12 Thread Noel Jones
reject_unknown_client is. The whitelist and reject_unknown_client must be in the same section. is it okay to have the warn_if_reject reject_unknown_client in smtpd_recipient_restrictions, I had read somewhere it was better to reject after client and helo because the client would just hang up

Re: warn_if_reject reject_unknown_client

2010-08-12 Thread donovan jeffrey j
added to access. Whether this is the right place to add the access table depends on where your reject_unknown_client is. The whitelist and reject_unknown_client must be in the same section. is it okay to have the warn_if_reject reject_unknown_client in smtpd_recipient_restrictions, I had

It's recommended to use reject_unknown_client

2009-04-27 Thread deconya
Hi list Im looking diferent options to configure postfix main.cf and I see the reject_unknown_client. I don't know if it's recomended because my postfix server is used for external clients and more uses connections with dynamic IP. If I put this, where goes, in smtp_recipient_restrictions

Re: It's recommended to use reject_unknown_client

2009-04-27 Thread Noel Jones
deconya wrote: Hi list Im looking diferent options to configure postfix main.cf http://main.cf and I see the reject_unknown_client. I don't know if it's recomended because my postfix server is used for external clients and more uses connections with dynamic IP. If I put this, where goes

Re: It's recommended to use reject_unknown_client

2009-04-27 Thread deconya
thanks Noel I don't like this option. too many risk. Best Regards On Mon, Apr 27, 2009 at 5:49 PM, Noel Jones njo...@megan.vbhcs.org wrote: deconya wrote: Hi list Im looking diferent options to configure postfix main.cf http://main.cf and I see the reject_unknown_client. I don't know

Re: It's recommended to use reject_unknown_client

2009-04-27 Thread Robert Schetterer
main.cf http://main.cf http://main.cf and I see the reject_unknown_client. I don't know if it's recomended because my postfix server is used for external clients and more uses connections with dynamic IP. If I put this, where goes

Re: It's recommended to use reject_unknown_client

2009-04-27 Thread Res
On Mon, 27 Apr 2009, Noel Jones wrote: reject_unknown_client_hostname) is known to reject legit mail. Use with What would be nice, is the ability to add a simple different custom message to each of these kinds of tests ( reject_unknown_client_hostname reject_unknown_helo_hostname

understanding reject_unknown_client

2009-03-09 Thread Krishna Murthy
Hi, I have reject_unknown_client in my smtpd_recipient_restrictions and have 2 questions regarding the working of this option. I looked up the documentation, but would love to cross check my understanding with other users. 1. I have noticed that the following scenario results in rejection

Re: understanding reject_unknown_client

2009-03-09 Thread Victor Duchovni
On Mon, Mar 09, 2009 at 08:46:12PM +0530, Krishna Murthy wrote: I have reject_unknown_client in my smtpd_recipient_restrictions Don't. This restriction is to aggressive. It is only useful in combination with other tests (applied to specific netblocks, sender domains, ...) The above behavior

Re: understanding reject_unknown_client

2009-03-09 Thread Noel Jones
Krishna Murthy wrote: Hi, I have reject_unknown_client in my smtpd_recipient_restrictions and have 2 questions regarding the working of this option. I looked up the documentation, but would love to cross check my understanding with other users. http://www.postfix.org/postconf.5.html

Re: understanding reject_unknown_client

2009-03-09 Thread mouss
Krishna Murthy a écrit : Hi, I have reject_unknown_client in my smtpd_recipient_restrictions and have 2 questions regarding the working of this option. I looked up the documentation, but would love to cross check my understanding with other users. 1. I have noticed that the following