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

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2answers
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Sendmail chdir(/clientmqueue) permission denied

My centos server can send mail using the 'mail' command but not from php. Maillog says: sendmail[18010]: NOQUEUE: SYSERR(nginx): can not chdir(/var/spool/clientmqueue/): Permission denied My ...
4
votes
2answers
3k views

Sendmail on Ubuntu trying to use Google Apps servers as a relay, by default?

I have a recently installed Ubuntu (natty) server, with a domain pointed to it. The mail for this domain is handled by Google Apps (via MX dns records pointing to Google's mail servers). Now, I've ...
4
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2answers
2k views

Configuring sendmail to archive a copy of any outgoing message

How do I configure sendmail to keep a copy of any message I send. An option would be to automatically send a copy back to my box.
4
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2answers
10k 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 ...
4
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1answer
76 views

Where is the email bounce sent? To the @domain or to the IP that sent it?

When I send an email from noreply@mysite.com to user@yahoo.com and I use that VERP bounce format like bounce+user=yahoo.com@mysite.com Is this bounce back sent to the mail server in DNS records of ...
4
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1answer
4k views

How to disable reverse DNS in Sendmail

I would like to disable reverse DNS lookups in Sendmail. We have an SMTP relay, running Sendmail, with an IP-based access.db. We have no requirement for reverse lookups and, in fact, they may be ...
4
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3answers
2k 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 ...
4
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2answers
8k 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 ...
4
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1answer
47 views

Why is sendmail adding an extra carriage return in headers?

I've got SendMail 8.14.4 running on a CentOS 5 server. A user in Japan is sending a message and when it gets processed by the server, SendMail is adding an extra carriage return for some reason. ...
4
votes
1answer
3k views

Sendmail process failed with error code 67

Everything was worked fine but someday sendmail stop working on me. I'am trying the following command line: echo "Body text" | mail -s "Some subject" example@somemail.com And got: ...
4
votes
1answer
4k 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 ...
4
votes
3answers
871 views

Tiny mail server for low end box?

I want to set up a mail server with as much smaller memory footprint as possible on a Centos 5 very low end machine. Bare minimum features is enough. :) But what are my options? I can't seem to find ...
4
votes
1answer
2k views

Server Sending Spam?

We have some servers hosting websites and email accounts for clients. Today we found that one of our servers has a very heavy load and by looking at the maillog it is doing a lot of sending to ...
4
votes
3answers
2k views

How to reject/detect emails claiming to be from my own domain?

We have following e-mail topology: Exchange server --------- Sendmail server ---------------Internet On sendmail server there is no any user mailbox and messages with sender address ...
4
votes
2answers
1k views

How do I allow sendmail to send TO any address?

UPDATE 10/21/2010 5p: Ok, so sending mail does work, but not sending mail to tom@wtw3.com from this box does not. The A record for wtw3.com points to the development box, but the MX records resolve to ...
4
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2answers
1k views

How to set up server side message filters on sendmail/Imap server?

I currently have message filters set up in Thunderbird to put incoming email messages from various sources in appropriate server side folders. Since I envision starting to use a smartphone (Android) ...
4
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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 ...
4
votes
1answer
210 views

What can cause an intermittent broken pipe error with a SendMail milter?

CentOS 5 / SendMail 8.14.x I'm noticing intermittent errors with a milter on my SendMail server. Here's an excerpt from the maillog (I've edited hostname, QID, milter name, and recipient address to ...
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4answers
4k views

How I (simply) Forward All Incoming Email to an External Address (ie. Gmail)?

With Google Apps no longer being free for small businesses/teams, I'm left pointing my MX records at my application server. I'd still like to receive email at a Gmail address sent to the domain ...
4
votes
1answer
546 views

Preventing RCPT TO: username enumeration in sendmail on ubuntu

I'm trying to configure sendmail to prevent it from allowing username enumeration through the RCPT TO: command. I've been googling endlessly and, from what I can see, the best way to achieve this is ...
4
votes
3answers
992 views

Can I prevent sendmail from sending emails and instead save them to a file?

I want to test a Newsletter application on a dummy server but I don't want all the clients in my DB (dumped from the live server) to get an email. Is there any way to prevent sendmail from sending ...
4
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0answers
59 views

How can I explicitly disable TLS when sending to one specific recipient?

I have a SendMail 8.14 server deployed in the middle of an SMTP workflow (Outbound mail looks like Exchange -> SendMail -> Appliance -> Internet) I have TLS configured for the first three hosts. ...
4
votes
2answers
4k views

Sendmail Configuration for Exchange Server

i need help for sendmail configuration in our linux machine. Here the things: I want to send email to outside by using our exchange server as the mail relay.But when sending the email through the ...
3
votes
5answers
536 views

Preferred mail system/server for a company?

Say you are responsible for setting up an email solution at a company. Which would be your choice? I know of the following options, but many of them not well: Gordano Mail System Exchange Exim ...
3
votes
2answers
1k views

How to copy outgoing messages on sendmail

I've searched the serverfault and Google, but did not find anything related to my question yet. So, I have a customer that wants to read all emails sent by his employees. I've configured a VPS with ...
3
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7answers
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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 ...
3
votes
1answer
4k views

ERROR: Message not sent. Server replied: 354

On webmail every user gets error "ERROR: Message not sent. Server replied: 354" while sending mails. But mails are sent properly and reaches properly. Can you tell me where is problem, and why it ...
3
votes
1answer
2k 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
3answers
76 views

How can I force sendmail to use SMTP instead of internal relay?

I have a web server that was blacklisted from sending email because it was responding to SMTP HELO with localhost.localdomain instead of the domain name of my server (we'll call it example.com). I was ...
3
votes
3answers
506 views

Setting up FQDN in sendmail [closed]

In this blog post he suggests echo '127.0.0.1 localhost EXAMPLE.my_domain localhost.localdomain EXAMPLE' >> /etc/hosts but ends the post with But this is a less desirable approach ...
3
votes
1answer
336 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 ...
3
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2answers
2k 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.
3
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1answer
8k 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 ...
3
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3answers
950 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. ...
3
votes
1answer
4k views

sendmail rejecting some connections with handshake failure: SSL alert number 40

My sendmail server on CentOS 5 started to reject some connections with the following message logged: error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1092:SSL alert ...
3
votes
4answers
14k 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
1k 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
2answers
604 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
6answers
10k 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
3answers
1k views

Is it possible to disable SSLv3 in Sendmail 8.14.3?

Is it possible to disable SSLv3 in Sendmail 8.14.3? The recommendations that I found is to use -O ServerSSLOptions=... but that option is not recognized. Is there any other way of disabling SSLv3 ...
3
votes
1answer
552 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
328 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
22k views

How to configure sendmail to relay through a specific server

I have a tiny home server setup behind my cable modem (bresnan communications). I want to be able for this box to send out email (not receive) for notifications and whatnot. What I have already ...
3
votes
3answers
19k views

How to configure sendmail to use a different SMTP server?

I'm trying to configure sendmail on Centos 5 so that all mail goes through another SMTP server. In this case, it happens to be an Exchange Server. I've edited the sendmail.mc file with this line: ...
3
votes
1answer
2k views

How To Tell SendMail To Explicitly NOT Try TLS For A Domain

CentOS 5.x | Sendmail Hi Guys, I have sendmail setup to perform opportunistic TLS but would like to never use TLS when sending to a specific domain. Is there an entry I can add to /etc/mail/access ...
3
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3answers
1k views

Configure sendmail to clone all outgoing email

is there a way to configure sendmail similar to postfix' always_bcc=bcc@localhost.localdomain ?
3
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2answers
3k 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
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2answers
2k 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
2answers
8k views

SendMail not working in CentOs 6.4

I am trying to send e-mails from my CentOS 6.4 but it does not work. My knowledge about servers is quite limited, so I hope someone can help me. Here is what I did: First i tried to send an email ...
3
votes
1answer
409 views

Mail server hammering

I've noticed a quick increase on smtp connections coming to my server, investigating it further i figured out that there's a botnet hammering my smtp server. I've tried to stop it by adding a rule at ...