similar to: Sendmail burst of "rejecting connections" - why?

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

Dear CentOS Community Is totally clear there's no support sendmail platform today, but I need to stop SMTP brute-force attack on sendmail. My server is attacked today, my maillog look like : 4624 at myserver.com>, proto=ESMTP, daemon=MTA, relay=myserver.com [127.0.0.1] Jun 14 19:07:01 at6412 sendmail[24627]: q5EN71jC024627: from=<>, size=3958, class=0, nrcpts=1,

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 posted something about this a while ago and didn't get any response. I having a HUGE problem with sendmail. I'm clueless that sendmail is even down until I check the box. No mail comes in until I restart and even then sendmail doesn't stay up. Note: I have only been having this problem since FreeBSD 4.8. I have been doing the same setup for ages on all my boxes without

I have almost zero experience with sendmail. I'd be willing to pay someone to set this up for me, interested? KNow of someone? On 4/19/20 12:18 PM, Alexander Dalloz wrote: > Am 19.04.2020 um 18:28 schrieb S.Bob: >> >> I installed sendmail via yum, but if I test it like this: >> >> >> echo "Subject: sendmail test" | sendmail sbob at

Hello, list, I have a problem with Sendmail configuration. I'm building (on CentOS 5) a "dual-MTA" setup with amavisd-new (as specified in amavisd-new documentation, file README.sendmail-dual). So far so good. But when I tried to add server SMTP-AUTH and TLS, I get a strange, permission-related error, and STARTTLS will not start. In my .mc conf, the Sendmail user is now the usual

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')

Ok, so a bit of a long subject line there... I'm running an email server using postfix, but a critical third-party package being used requires 'sendmail' the package.? No, I can't uninstall that package, please don't suggest that, and I don't have control of its requires.? So both postfix and sendmail are installed, and that's just the way it has to be.?

Hi all, I've been trying to hit on the right configuration combo to allow relaying from specific users and/or domains to an internal box running Sendmail. Reading the docs at http://www.sendmail.org/m4/anti_spam.html#relay and http://www.sendmail.org/m4/anti_spam.html#access_db_fine I would appear that I should be able to all per-address relaying in /etc/mail/access by enabling

Greetings - I'm having trouble working out where to alter this behaviour (so please forgive me if it turns out to be an Exim thing rather than Dovecot!)... My test service is using Exim as the MTA and Dovecot's "deliver" for the LDA. We are using Maildir mailboxes with filestore quotas. When I send a large test message to myself that cannot be delivered because I

Our backup mail server (which I have just re-configured) tries to contact the primary mail server, and fails. My log shows repeatedly "connection refused": May 15 22:21:41 mx2 sm-mta-rx[8674]: q4FIhPij007483: makeconnection (mail.greenspot.fi. [83.143.217.182]) failed: Connection refused by mail.greenspot.fi. May 15 22:21:41 mx2 sm-mta-rx[8674]: q4FIhPij007483: to=<myuser at

Hi all, I'm using Debian (testing) for my office mail. I'm using sendmail and Dovecot to deliver email to clients over IMAP using mbox format. I want to move over and start using Maildir. I know that I can use different MTA's to do the job, but I really like sendmail, and I run additional sendmail servers across the my internal and external networks. I'm probably

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

Centos 5 Hello I successfully converted my mta from sendmail to postfix. no problem. mail is ok. A by-product of that, as bizarre as it may seem is this: As regular user, when I do 'su -' to become root, all is well. As regular user, when I do 'sudo bash' I become root alright but I also get: sendmail: fatal: Recipient addresses must be specified on the command line or

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, Today I searched redhat official portal and learned that Sendmail is considered deprecated. By default, CentOS 7 will use postfix as MTA. I need good advise on what it means to us. We are CentOS customers. We use that operating system for quite a few years. We rely on Sendmail for years for us to relay large quantity of emails to our customers for marketing purpose. We build our additional

I have enabled the feature in sendmail.mc to check with spamhaus for spammers. However since this block is being made at MTA level, I would like to know is something can be done to obtain statistics of blocked attemps. thanks -- ------------------------------------------------------------ Erick Perez Panama Sistemas Integradores de Telefonia IP y Soluciones Para Centros de Datos Panama,

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, I have a Centos 5 system with sendmail running as my MTA. Normally I note from sendmail logs that mails get delivered using the 'local' mailer. I have therefore entered the following into my sendmail.mc file, from an earlier post on this list: define(`LOCAL_MAILER_PATH',`/usr/libexec/dovecot/deliver') define(`LOCAL_MAILER_FLAGS',`DFMPhfnu9')

I would like to setup dovecot (1.1.20) with LDAP virtual users, but I don't seem to understand how to get my sendmail to accept mail for the virtual users. (I am rather new to this, so I may have some misunderstandings) I have followed - wiki.dovecot.org/HowTo/DovecotOpenLdap (OpenLDAP 2.3.43) and I think I have IMAP working for virtual users. I can connect to port 143, enter a username and