similar to: close open relay

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

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

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

I tried editing sendmail.cf and changing the Dj line to X.com so any email originating from my machine would be X.com not m.X.com where m is machine name. I typed make in the /etc/mail directory and did service sendmail restart. This did not work. email still shows as m.X.com What am I missing so as to NOT have the machine name in the email address. I just want the domain. Thanks, Jerry

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

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

Hello, I am having a problem with returned mail. I don't have something configured correctly. I have 6 virtual hosts on one machine and mail sent from these host is being returned. This is the transcript: The original message was received at Tue, 11 Apr 2006 07:30:19 -0400 from localhost.localdomain [127.0.0.1] ----- The following addresses had permanent fatal errors ----- <f5loar

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:

Hi List, I have a dumb sendmail question, and I'm wondering if anyone can point me in the right direction (besides "sendmail list is two doors down on the left" ;-). One of our clients has a bunch of servers -- CentOS 5 -- that are on only a private network that's NATted to the outside world -- that is, those servers can initiate outbound connections fine, but don't

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 All, I'm usually quite good with sendmail on Centos 5.8 but I must have missed something here. I've not done this before but, I want to set sendmail so that its outgoing mail appears to come from the domain of the network it lives on. Its real hostname is server2.domain.co.uk ( the domain bit is substituted for this post) and I want it to send as domain.co.uk, that is really

By default, sendmail only listens on the localloop: DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl But by default to allow sendmail to even work the iptables entry is: -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 25 -j ACCEPT Without this, sendmail can't even connect to localloop. But should I handedit this line to something like: -A

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

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

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

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

I have a problem getting spamd and sendmail (both stock CentOS4 rpms) to work together on a couple of smtp relay machines. This is clearly a configuration issue and no doubt revolves around my lack of comprehension of how this is to work. Basically, the setup consists of two frontend public smtp transports that redirect all email through a firewall to an internal imap server for final

I have a user who has Mac OS 10.4.8 with Entourage X. The email server is sendmail 8.13.8 and is setup to use STARTTLS on a CentOS 4.4 system. It appears from everything I have googled that only Entourage 2004 will properly function with STARTTLS. Has anybody any experience with Entourage X ... specifically is there something I am missing regarding the CentOS server setup or are all Entourage

Hello, I'm trying to set up a sendmail server on 4.8 that supports auth-based relaying. I followed the procedures at http://puresimplicity.net/~hemi/freebsd/sendmail.html, and aside from having to run makes manually in the library directories, I had no difficulty. I did not use the rebuild world recommendation, though. Everything is up and running, but whenever I try to send mail

I need to only accept emails on my MAIN POP/IMAP server from 3 servers (under my control (front line MX servers)) & local users who have local POP accounts. ALL other emails need to be blocked. What is the best way of doing this ? Thanks Denis