General purpose email routing software that supports mail transport via TCP/IP using SMTP

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3
votes
1answer
658 views

Flood of traffic on port 25

I am getting thousands of hits on port 25, over 400,000 connections in a day. I am using sendmail default settings on Debian 7. Mailserver is not configured. Please see below Nginx access logs ...
3
votes
6answers
949 views

How do I configure sendmail to send mail via MX record and not to localhost?

I am trying to get sendmail to transfer mails to the servers specified in the MX records so when the server sends an email to me@domain.com I want it to skip localhost and go straight to gmail. I've ...
3
votes
4answers
6k views

How to sendmail via command line piping

I have a cron command that runs a file and I'm trying to setup the output so it emails to me. I use this with 3rd party scripts that I don't want to modify the direct files, so I need to pipe the ...
3
votes
3answers
936 views

sendmail queue - display number of messages per domain

Is there a simple command to find out the current number of messages per domain in the linux sendmail queue? mailq dumps out a verbose list, but it's not convenient for a quick overview. I'm using ...
3
votes
3answers
1k views

Sendmail : ignore local delivery

I've a Ubuntu webserver with Sendmail as my MTA Currently when i email outside my webserver's domain e.g. example.com to something like gmail or any other email outside the example.com domain it ...
3
votes
2answers
479 views

Set up an SMTP server that catches & stores all mail

I need to set up a SMTP server in a dev environment that will accept all mail sent to it (for any domain) and simply store it so we can later see what it has caught. What is the easiest way to set ...
3
votes
2answers
7k views

Sendmail to local domain ignoring MX records (part 2)

I have the exact problem, like in this post: http://serverfault.com/questions/25068/sendmail-to-local-domain-ignoring-mx-records I am also using email provider like GMail For Your Domain (which stores ...
3
votes
5answers
8k views

How can I set up sendmail to forward all mail to an external MTA?

We have multiple applications that currently talk SMTP to an external MTA. The emails have arbitrary destination domains (they're emails to be sent to our users), but all from the same internal domain ...
3
votes
1answer
268 views

Sendmail MX Lookup fails, dig doesnt

Anyone able to explain this problem? I can do a dig or nslookup on a host and get the MX servers, but when I check through sendmail it fails? RHEL 5.6 Sendmail: (root)> sendmail -bt ADDRESS TEST ...
3
votes
3answers
241 views

Testing a mail server / server not making it to recipient

We have a Drupal website on a Linux server, it is using mail() to send mail through PHP. I think that would be using PHPmailer and sendmail. Domain is www.myclientdomain.com and we can receive email ...
3
votes
1answer
3k views

How to make sendmail to relay local mails?

I have www server called say mywebsite.com and mail serwer mymail.com. Mail for mywebsite.com is handled by mymail.com (mx record for mywebsite.com is mymail.com). Problem is that I want to send mails ...
3
votes
1answer
897 views

Prevent mail being marked as spam

This is a canonical question about avoiding outgoing mail being classified as spam. I'm wondering how to prevent my emails from my site being marked as spam? I'm using sendmail. I'm trying to ...
3
votes
3answers
842 views

Configure sendmail to clone all outgoing email

is there a way to configure sendmail similar to postfix' always_bcc=bcc@localhost.localdomain ?
3
votes
2answers
60 views

Backup MX server used to queue mail

In short: I need to setup backup MX server, which will queue messages it receives for later delivery through original MX, AND it must only accept messages for mailboxes which will be listed in ...
3
votes
3answers
3k views

Configuring php mail() per domain

I have about 6 sites on my dedicated server (running centos5), and all emails sent using php's mail function are sent by nobody@servername.hostname.com e.g. "Received: from nobody by ...
3
votes
3answers
4k views

postfix uses hostname instead of myhostname

I am trying to set up an outgoing mail server for sending emails which is to relay to our ISP. In /etc/postfix/main.cf I have myhostname to ourcompany.example.com and myorigin and mydomain to ...
3
votes
1answer
777 views

sendmail: forward wildcard MX to a single email address

I'm trying to set up sendmail to forward all email to *@ *.crm.mycompany.com to crm@mycompany.com. Unfortunately my sendmail-fu isn't up to it and I can't find anything useful on Google. My plan was ...
3
votes
4answers
1k views

What is the fastest mail server software

I'm currently developing an application which may have to send a large amount of e-mails at once. I was wondering what you guys would recommend as the fastest (e-mails sent per minute) mail server to ...
3
votes
2answers
2k views

How do I throttle outbound email with sendmail

I know, I know, I should switch to Postfix. But in the meantime, how do I throttle outbound email (especially email to a single domain) in Sendmail?
3
votes
2answers
2k views

Sendmail Configuration to not deliver mail to local machine

I have sendmail up and running on an Ubuntu 8.04 machine. It can send mail correctly to all but the domain to which it is a part. How do I configure it to not send to itself for email addresses on ...
3
votes
2answers
111 views

Sendmail yields “user unkown” errors even after (wrongly) setting up a catch-all account

I was trying to follow the instructions found here to set up a catch-all account, but still I get the following message for mails sent to non-existent users: The error that the other server ...
3
votes
2answers
363 views

Redirect all mails to local account during development

I'm developing a webshop. When a order has been placed it sends out invoices and notifications to coworkers via email. Developing anything related to the emails has become really annoying, as I have ...
3
votes
1answer
747 views

What usually happens to a message when server returns SMTP Error 550?

What usually happens when a message recipient can not be found? Will it be deleted or archived on the (destination) server? In 550 case, will the message body be sent at all? Action: failed Status: ...
3
votes
1answer
1k views

Linode w/ Google Apps - how to get mail from PHP working?

I have a CentOS Linode instance that I'm running as a LAMP stack. I'm also using Google Apps for email. I have my MX records pointing at google's servers and everything is working in terms of relaying ...
3
votes
1answer
81 views

Can Hand-Edited sendmail.cf actually be generated from sendmail.mc?

I have two CentOS systems, version 5 and 6. Because our firewall has blocked off unsolicited port 25 traffic, we have a little Perl script that logs into our email server as a valid user to send email ...
3
votes
2answers
361 views

Unable to add IPv6 address to sendmail access list

I am running Sendmail 8.14.4 on Slackware 13.37. I have the following in my /etc/mail/access file and it works without any errors: Connect:127 OK Connect:10.0.1 RELAY ...
3
votes
3answers
3k views

Sendmail relay out of Amazon EC2?

I have a site running on CentOS 5.4 through Amazon EC2. Unfortunately, Amazon has had nothing but trouble with their entire IP range getting black listed from spam tracking services regularly. I need ...
3
votes
2answers
3k views

Sendmail Sends but never Delivers

I have tried 10 different emails hosted at Google, Yahoo!, GoDaddy, and some that are privately hosted, and each time I get the following errors. I have blocked sensitive information, but you will be ...
3
votes
1answer
2k views

How to reduce the Sendmail DNS timeout period

I have a problem with the sendmail DNS timeout period when trying to sent to a email address which has a DNS issue. Let's say the problematic email address is test@problemdomain.com (not real one) I ...
3
votes
2answers
2k views

sendmail on ubuntu (9.10) machine “stopped” sending mail

I'm developing on my ubuntu 9.10 machine for the web (php). I'm using it sendmail for sending mails, and while developing on my local machine, I send local mails (to my user 'doron'). Up until a ...
2
votes
7answers
6k views

all mails going to gmail SPAM (sendmail on centos) 127.0.0.1 problem?

UPDATE ON SPF CHECK http://www.openspf.org/Why: The SPF check gives me this: An SPF-enabled mail server rejected a message that claimed an envelope sender address of support@ourdomain.com. An ...
2
votes
2answers
2k views

what is mda (fetchmail) and mta (sendmail)?

i have read some articles about mda and mta but still don't have a hang on it. what is exactly is the difference between a mda like fetchmail and a mta like sendmail. in my computer, do i have to ...
2
votes
1answer
226 views

MX Record not working

I'm almost done configuring my nameservers for my domain. Everything works fine website responding...but My MX record don't seem to be working, and I tried a lot of things. I created a cname with ...
2
votes
2answers
281 views

How to make sendmail accept connections from localhost only

I need to secure the server by making sendmail-mta accept only local connections (from localhost), so that any external (potential spam) connections are denied. I use Debian 7.0 currently.
2
votes
2answers
470 views

sendmail is using return-path instead of from address

I have a customer that is complaining about emails marked as spam. I'm looking at the header. It shows the correct From: reg@company.com However, it doesn't like the return-path. Return-Path: ...
2
votes
4answers
2k views

What command can I use to search sendmail logs for ALL message details involving a specific recipient.

CENTOS 5.x | Sendmail Occasionally I need to search through sendmail delivery logs to find out what happened to a missing message. This usually involves two (or more) steps: STEP 1: Search ...
2
votes
2answers
465 views

Is there a way to completely disable outbound opportunistic TLS support in SendMail?

CentOS 5.x SendMail 8.14.4 An overzealous network security feature is causing TLS negotiations to fail when my Sendmail server tries to talk to external hosts. This is causing sendmail to constantly ...
2
votes
1answer
60 views

Disable mailing in cron globaly

The web is full of suggestions how to disable mailing in cron like asked here stop linux from emailing me cron errors?. Is there really no global config flag I can set to disable mailing in cron for ...
2
votes
2answers
56 views

Upgrading sendmail - what's involved?

I need to upgrade a server from Sendmail 8.14.1 to 8.14.5. Im trying to compile a 'milter' and am having some issues with missing libraries. Anything I should look out for? Can I just do the 'make ...
2
votes
2answers
2k views

Nginx - Email Forwarders

I used to have a CPanel/Plesk server so I didn't setup email via command line etc. I don't want an email pop3 account or mail server. Just want to forward "email@site.com" to "email@gmail.com" - can ...
2
votes
2answers
1k views

Amazon SES for sendmail in ubuntu

i tried to use Amazon SES with sendmail on my ubuntu server for sending mail because EC2 ips are blacklisted and i followed the following tutorial ...
2
votes
2answers
1k views

Script Help - Parse /var/spool/mail/user

CentOS 5.x | SendMail Hi guys, Is there an easy way to retrieve individual messages from /var/spool/mail/? I have an idea for a really simple script and would like to check each individual message ...
2
votes
3answers
2k views

How to send a file as an email attachment on a Centos box?

I have tried the following: mailx -s "test" abc@xyz.com which says bash no command found. also have tried : Mail -s "test" abc@xyz.com which says /usr/sbin/sendmail: No such file or directory ...
2
votes
1answer
6k views

Question on SendMail daemon actions when load average is too high

My sendmail server started rejecting connections because load average was too high (due to a spam issue that has since been resolved). Error was: sendmail[13400]: rejecting connections on daemon ...
2
votes
1answer
2k views

sendmail vs smtp server

I currently don't have a SMTP server setup. However, in my PHP code, I send all my SMTP request to sendmail. Are there any down fall to using this procedure? If yes, what are the advantages of ...
2
votes
2answers
6k views

How to disable mail transport agent from starting up in Ubuntu?

I installed sendmail on ubuntu 9.04 on my laptop computer. My php mail() function still doesn't work from localhost, so I want to disable the auto start up of mail transport agent during system ...
2
votes
2answers
200 views

sendmail config, making open relay

I am trying to find a sendmail.mc config that allows open relaying without username/password to any system (I am testing some code that uses SMTP). After Google'd, I could not find and it has been a ...
2
votes
2answers
982 views

sendmail on Snow Leopard

I'm trying to get sendmail working on my MacBook Pro (OS 10.6.4), so that I can send mail with PHP's mail() function. If you know how to do this without sendmail, I'd be interested in that also. The ...
2
votes
6answers
16k views

How to setup sendmail (for Bugzilla)

I've already installed Bugzilla and I'm trying to the mailing functionality working. Apparently it can use the linux sendmail to do so. I don't know the first thing about how email even works. I've ...
2
votes
3answers
767 views

How do you configure sendmail to reject Email with a Date header too far from real time?

A friend of mine using (I believe) qmail has it configured to reject, as SPAM, any incoming Email with a Date: header that is too far from real time. I can't figure out how to do this with sendmail. ...