similar to: postfix - reject of incoming mail due to helo check??

Hello to all members. I am using Dovecot for 5 years, but this is my first post here. I am aware of the various autoresponder scripts for vacation autoreplies (I am using Virtual Vacation 3.1 by Mischa Peters). I have an issue with auto-replies - it is vulnerable to spamming with forged email address. Forging can be prevented with several Postfix settings, which I did in the past - but was forced

Not technically a centos question, but a lot of you guys seem to manage some large systems and I could use some clarification on a postfix setting.* *reject_unknown_client_hostname (in postfix < 2.3 reject_unknown_client) When I first used this there were issues with users trying to send mail through the server from hotels, wireless spots, etc. This was solved by pushing up permit

Hi Buddies, I have 2 servers running dovecot + postfix for pop/imap users. The users mailbox are in a Nfs storage. The load of server is ranging at 3.0 to 15.0. I really dont know what happened.. I read a lot about tuning of dovecot, and the changes are applied, how you can see. The Hardware of server is really good! The host have 8GB of mem and 2 sockets with 2 cores anyone. The server receives

On Friday, June 10, 2005 3:16 AM, Andrew Kohlsmith [SMTP:akohlsmith-asterisk@benshaw.com] wrote: > On Friday 10 June 2005 04:08, Terry H. Gilsenan wrote: > > Received: from source ([81.56.129.44]) by exprod5mx8.postini.com > > ([64.18.4.10]) with SMTP; Fri, 10 Jun 2005 00:29:16 PDT > > > > Your MTA claimed it was called "SOURCE" but rDNS tells the recipient

hello list hello dovecot network hello all the reader here is a sieve script this ######################################## require ["fileinto","regex","comparator-i;ascii-numeric","reject","relational"]; # rule:[spammanage] if header :value "ge" :comparator "i;ascii-numeric" ["X-Spam-score"] ["500"] {

Hi, I have two very similar AMD based work stations running fully current CentOS x86_64. Both have 4Gb of RAM, both have [rkampen at media ~]$ sudo rpm -qa |grep flash flash-plugin-10.0.22.87-release.i386 [rkampen at media ~]$ sudo rpm -qa |grep fire firefox-3.0.6-1.el5.centos.i386 One machine (home) works fine on my web page www.ndgonline.net/ndg/ the other (work) seg faults - I guess it is

Hi guys, is that a genuine email from the list, I'm getting it rejected as it's missing reverse hostname: May 2 21:21:41 postfix/smtpd[18033]: NOQUEUE: reject: RCPT from unknown[194.89.34.45]: 450 4.7.1 Client host rejected: cannot find your reverse hostname, [194.89.34.45]; from=<dovecot-bounces at dovecot.org> to=<voytek at sbt.net.au> proto=ESMTP

All i have is : smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated   I disabled the unknown restriction due to lots of customers of me are missing PTR records, which needs to be set bij the internet provider. So they got blocked, i had to remove these.   The Helo check is often on the IT department can adjust them selfs. And most spammers have incorrect helo’s

After fixing the abnormal logging with attempts to chmod smbpasswd file, a new threat is now happening: [2024/01/10 16:29:13.984400, 0, pid=2853904] ../../source3/lib/util_sock.c:711(matchname) matchname: host name/name mismatch: 10.2.111.26 != (NULL) [2024/01/10 16:29:13.984471, 0, pid=2853904] ../../source3/lib/util_sock.c:893(get_remote_hostname) matchname failed on 10.2.111.26 Yes,

For reasons of user privacy and security I usually configure submission servers to not include accurate IP address and HELO information of authenticated users. (Usually replacing it with a private-use domain / IPv6 address.) Dovecot submission (2.3.2) will produce a header something like this (where ?10.22.36.10" is a public IP address) Received: from [192.168.1.184] ([10.22.36.10]) by

Hi All, This is regarding the reverse DNS issue 1. We are using samba AD 4.4.5 & samba integrated Bind 9.1 2. RDNS records are not being created automatically Is it possible that RDNS record generate automatically like the Microsoft Active Directory Thanks & Regards, Sunil Server Admin Goods and Services Tax Network (GSTN) Mobile   :  +91 9896755744 Phone Tag :  011-49111238

Hi All, I have an old (2004) Intel based server with 4G of ram running Linux ndgonline.net 2.6.18-92.1.22.el5 #1 SMP Tue Dec 16 12:03:43 EST 2008 i686 i686 i386 GNU/Linux fully up to date using centOS rpms for apache, php, and mysql. I have just changed from dmraid to md raid for the OS on mirrored 80Gb SATA drives. (long story for another time) Mysql lives on a Intel hardware raid 5 controlled

Hey everyone, I'm one of those crazy people willing to try setting up Samba4 alpha in a small production environment as a DC. I've followed the Samba4 HowTo (which is excellent by the way) and have a domain setup and functioning in a test environment. My production network, however, is not quite as nice as my test network. I have convinced IT (I work for a group of research

Hi, I have followed the recommended steps for creating a package (rctest). As of now, my goal is simply to understand how various pieces fit together. The package includes: (1) C code with source in sub-directories, compiled to create a static library. (a) There is a single C-struct (dns) a simple 'matrix': {int m; int n; double *d;} (b) C code to create random matrix of a certain size.

Hello... I am encountering a problem sending emails from Windows using an extermal smtp server. When attempting to send out the email, the following error is returned: 501 Syntax: HELO hostname I have checked the format of the emails, and they are ok. It seems it''s choking right at the begging of the connection to the smtp server, when my computer needs to identify itself by sending

I just got SLAMMED with accessed to httpd from 91.230.121.156 I added the address to my firewall to drop it. FYI host 91.230.121.156 156.121.230.91.in-addr.arpa domain name pointer no-rdns.offshorededicated.net. Jerry

On Wed, 10 Jan 2024 16:32:39 +0300 Michael Tokarev via samba <samba at lists.samba.org> wrote: > After fixing the abnormal logging with attempts to chmod smbpasswd > file, a new threat is now happening: > > [2024/01/10 16:29:13.984400, 0, pid=2853904] > ../../source3/lib/util_sock.c:711(matchname) matchname: host > name/name mismatch: 10.2.111.26 != (NULL) [2024/01/10

Hi, I'm running our local school's mail server on CentOS 7, Postfix and Dovecot. We get quite a lot of spam, so I have the following sender restrictions in my /etc/postfix/main.cf: --8<------------------------------------------------------ # Restrictions SMTP smtpd_helo_restrictions = reject_unknown_helo_hostname smtpd_sender_restrictions = reject_unknown_sender_domain,

10.01.2024 17:02, Rowland Penny via samba wrote: ... > If this is a standalone server, then I suggest your turn on Avahi and > use it, that way rdns will work, you will get 'whatever_hostname.local' Heck. I'm saying that a feature foo is broken. You're suggesting to use another feature instead. The purpose of my email is to fix the broken feature, instead of switching to

On 27 January 2016 at 08:24, Rowland penny <rpenny at samba.org> wrote: > On 26/01/16 20:54, Henry McLaughlin wrote: > >> [root at centos7member ~]# net rpc rights list accounts >> -U'TESTING\administrator' >> Enter TESTING\administrator's password: >> Could not connect to server 127.0.0.1 >> Connection failed: NT_STATUS_CONNECTION_REFUSED