similar to: Sendmail, localloop, and iptables -- should I be more paranoid?

I'm probably missing something obvious, but I can get sendmail to give me AUTH PLAIN and LOGIN options. What I have is fairly standard configuration. The relevant part of sendmail.mc looks something like this: define(`confCACERT_PATH',`/etc/ssl/certs') define(`confCACERT',`/etc/ssl/ca-bundle.crt') define(`confSERVER_CERT',`/etc/ssl/smtp.crt')

HI folks, I've an up-to-date CentOS 5.x box on a small intranet (<20 users). We did a reboot over the weekend and all appears well except that clients on the LAN can no longer send email. Just hangs/times out. No clear identifiers in the /var/log/maillog or /var/log/messages. We're not setup for ESMTP as it's a closed network and I'm really hoping for a kickstart as to

hi, i have installed sendmail+mailscanner+clamav+spamassassin and work fine, but my telnet localhost 25 is not authenticates. i read a lot of docs but something i don't do it. i have installed centos 4.3 with: sendmail-8.13.1-3 sendmail-cf-8.13.1-3 dovecot-0.99.11-2 mailscanner-4.50.15-3.9 clamav-0.88.4-1.9 spamassassin-3.0.6-1 cyrus-sasl-2.1.19-5 cyrus-sasl-plain-2.1.19-5

Hi. Apologies to the list for sending this twice as I forgot to enter a proper subject line, I wanted to write the content first and then make up the subject line ;-) -------------------------------------------------------------------- I am trying to configure sendmail that is looks up the users credentials to allow them to send email via that server via an imap server on the same machine

Hi, i have a CentOS 4.4 running sendmail, with two network interfaces (eth0 -> Internet , and eth1 Local Network), from the terminal (SSH) i do telnet 127.0.0.1 25 and it connects to sendmail (i think so), but from another server (external, and so from the same SSH terminal) i try to connect to the Internet IP telnet 146.77.220.236 25 Trying 146.77.220.236... telnet: connect to address

After reading this article: http://www.theregister.co.uk/2005/08/31/blocking_chinese_ip_addresses/ I got to thinking that there is really no reason for *any* traffic to hit my servers that comes from anywhere outside North America. So I wrote the perl script at the end of this posting to extract selected IP ranges posted at iana.org and convert them into iptables rules blocking any traffic

I know this is a "generic" question, but fully CentOS related. I attempted to set up i386 v.4.1 on my primary computer at the co-located site, and thought I had everything squared away till I discovered the machine was refusing mail connections. AFIK, I had no firewall or other objects blocking port 25. It has been my experience that with most arch's and versions where sendmail is

Hello. I am scratching my head about sendmail for a simple thing: I have a CentOS 4 box on which I would like to receive e-mails. when I type 'telnet localhost 25' I can connect successfully to the sendmail service. Now if I type: 'telnet 192.168.0.30 25' on the same host the connection is refused. It also refuses connections from another host. I have edited the

hi all, running centos 4.7 i686. I seem to have an o pen r elay sendmail server. How do I close it? I have the STRAIGHT centos install sendmail.mc file. Only thing I changed was: dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl so as to allow incoming email and not just localhost. however this seems to relay everyone. I looked at http://www.sendmail.org/tips/relaying but it

Hi all, I'm working my way through v6ing our network. I have a mail server with the default dovecot/sendmail configuration working happily for pop3, pop3s, imap, imaps, smtp, and smtps on v4. I have managed to get all but smtps working on v6. Following is the relevant sendmail.mc - DAEMON_OPTIONS(`Name=MTA-v4, Family=inet, Name=MTA-v6, Family=inet6') DAEMON_OPTIONS(`Port=smtps,

I have centos 4.8 i686. It has stock sendmail. see file below. I am getting reports that it is an open relay. I have searched all around and it seems like it should be closed. I have dnl for accept_unresolvable_domains. What can I do to close my sendmail. Thanks, Jerry My sendmail.mc is as follows: --------------------------------- divert(-1)dnl dnl # dnl # This is the sendmail macro config

Greetings, I'm refining a CentOs configuration installation, now just over one month old running on a colocated production server. Previously, we ran a version of Fedora for over seven years. Specifically, I'm reviewing our sendmail configuration, both with respect to authentication and port usage. Previously, we had the following line in the sendmail.mc line:

All; I installed sendmail via yum, but if I test it like this: echo "Subject: sendmail test" | sendmail sbob at quadratum-braccas.com I get a local mail on the server with this every time: Message? 1: From MAILER-DAEMON at kdb-bugs.example.com? Sun Apr 19 10:15:00 2020 Return-Path: <MAILER-DAEMON at kdb-bugs.example.com> Date: Sun, 19 Apr 2020 10:15:00 -0600 From: Mail

Hello everyone, I tried to configure sendmail so that I can use mail() in php. I don't host my email server, my ISP does. I just want to configure sendmail so that it uses external email server (my ISP) to send mail. When I executed mail(), i got no error report from php. I checked /var/log/maillog and it indicated that the message was accepted for delivery. However, it didn't

Hi - OK not really an Asterisk question but it is affecting one of my favorite features - emailing voice mail! I've posted on some Linux forums and sendmail.org but no response so I'm hoping someone will take pity on me ;-) My ISP requires SMTP authorization and I'm having a heck of a time getting it to work. I've included the following below: Asterisk 1.4.21 CentOS 5 Sendmail

Hi, all I want voicemails to be delivered to recepients by e-mail. I have set up voicenail, and I can see asterisk is using sendmail to send messages out. Using Ethereal, I can see that messages are leaving my network, but receipeint mail server never replies back. As a result, mail delivery is timed out. I got a book on sendmail and it looks quite complex. It will take quite a bit of time

On Mon, Oct 2, 2017 at 5:29 PM, Stephen John Smoogen <smooge at gmail.com> wrote: > On 2 October 2017 at 17:21, Larry Martell <larry.martell at gmail.com> wrote: >> I an running CentOS7 in a docker container. I need to send email from >> that container so I installed sendmail and then I run: >> >> m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf` and when

Dear List, I recently spent some time out of the USA, and found myself in a hotel that blocked port 25 which prevented my laptop's ability to connect to my office mail server. I did a scan on the internet and made the observation that this was a common problem. I had port 22 available so I was able to get my office server set up to accept mail on 25 and 587 without difficulty. The command

Hi; I sucesyfully ran AD on samba4 software. All required by me functions works properly but when I turn on firewall my enviroment is getting very slow - logon process is 3 times longer then on system with disabled firewall service. Below I pasted my firewall configuration - I based on samba tutorial and aexples and official microsoft web page with needed ports: Have you similar problems after

Hello, I do appologize if this is something that was already discussed somewhere else... but for now I was not able to find the appropriate How-To. Would anybody know what the IPTABLES entries are to have working Samba4 Domain Controller? I tried the following: -A INPUT -p tcp -m state --state NEW -m tcp --dport 88 -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 749 -j ACCEPT -A