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

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1answer
2k 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 ...
5
votes
1answer
208 views

Postfix stops picking up mails at night

Our postfix system stops sending mails at night. Every night at 2am it stops picking up mails. The server is a monitoring server, which sends a lot of mails per day. /bin/mail drops the mails in the ...
5
votes
1answer
807 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 ...
5
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3answers
4k 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 user@my.domain....
5
votes
1answer
1k views

Sendmail Tuning For Batch Mail Jobs

I have a webservers that send out emails to a sendmail relay server as a batch job. The emails need to be accepted by the relay sendmail server as fast as possible, however, they do not need to go out ...
5
votes
4answers
2k views

can't get php mail() working on Ubuntu desktop version with sendmail and postfix

I'm running Ubuntu 9.10 LAMP and trying to do a simple email test with PHP and I'm not getting any emails sent. mail("myemail@gmail.com", "eric-linux test", "test") or die("can't send mail"); I ...
4
votes
4answers
2k views

Does “\root” do anything in /etc/aliases?

I've found on a couple servers that have the following entry in /etc/aliases: root: \root,email@example.com You can send mail to /dev/null like this: root: /dev/null I can't find \root used in ...
4
votes
2answers
4k views

What mailer does cron use to send mail?

I am trying to debug an issue with cron not sending mail on a Centos 6 box that I did not configure. How can I determine which mailer cron is using to send mail? The crontab man page has this to say, ...
4
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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 ...
4
votes
2answers
4k views

Sendmail doesn't work with iptables, even though smtp and dns are allowed

I have sendmail installed on Ubuntu 10.04 solely for the use of the php mail() function. This works fine unless iptables is running (I've been using sendmail myemailaddress@domain.com to test this). ...
4
votes
4answers
2k views

stop linux from emailing me cron errors?

Today i setup ssmtp to email me from sendmail. However what i didnt expect is that applications like cron would email me. One of my cron scripts before backing up the db tries to create path/year/...
4
votes
3answers
8k views

Where are sendmail emails stored?

I am trying to build an autoresponder script for sendmail (no, I don't want to use a pre-built one yet), but I can't seem to find the location of received emails on my server. I have to specify that ...
4
votes
1answer
507 views

Sendmail is not listening to any port

I am using VPS hosting with CentOS 6. I've installed Sendmail, but it's not listening to any port. I've checked, IPTables is disabled (or stopped I guess; service iptables status command returns ...
4
votes
1answer
10k 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 MTA:...
4
votes
3answers
4k views

Is sendmail caching DNS or getting it via different method than host/dig/nslookup?

We've got a linux server running sendmail that relays email through our primary mail server, but ever since a change of DNS servers last week, it's been timing out connecting to our mail server. Upon ...
4
votes
2answers
16k views

AOL bounces with: AOL will not accept delivery of this message [closed]

AOL started bouncing emails from my mail server with the following error: 521 5.2.1 : AOL will not accept delivery of this message. 554 5.5.0 Remote protocol error On the troubleshooting page AOL ...
4
votes
3answers
1k views

Sendmail and nslookup resolution problems

On my Ubuntu server I've been trying to get the PHP mail() function to work by installing sendmail (I also have postfix installed but I gave up on it). However, when I try to send mail it gets queued ...
4
votes
2answers
5k views

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
3answers
20k views

How to configure a real domain name for sender address

I tried to sending out an email using php mail() function but it failed somehow, complaining that a real domain name is required. The following is observed in the maillog: sendmail 4984 r25984: ...
4
votes
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
votes
2answers
12k 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
votes
7answers
2k views

Receive email alerts from Linux file server

GOAL: Get a text file on my file server into my gmail inbox. The file server is running Ubuntu Server 8.04 I currently SSH into it from time to time and to check logs, SMART stats for hard drives, ...
4
votes
6answers
12k 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 ...
4
votes
3answers
236 views

/etc/aliases vs virtusertable

I have a mail server running Sendmail that hosts multiple mail domains. So for instance, emails addressed to @aaa.com and @bbb.com are both going to this same server. All this time I am using /etc/...
4
votes
5answers
3k 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 ...
4
votes
4answers
20k 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 ...
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
votes
3answers
7k views

sendmail can not deliver to gmail - IPv6 sending guidelines regarding PTR records not met

I am having trouble in delivering mail to google from a fresh sendmail install on ubuntu 14.04. The DNS-records seem to be fine for the ip. Something else must be wrong. Sending mail from command ...
4
votes
1answer
84 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
votes
1answer
4k 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: /home/<...
4
votes
1answer
5k 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
votes
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
votes
1answer
75 views

how to configure sendmail with multiple ssl certificates for multiple domains

I need to configure a server to host multiple email domains on a single IP, and thus install multiple ssl certificates. Miraculously, I have been able to get apache and dovecot to work with multiple ...
4
votes
1answer
2k views

Abnormal sendmail activity using up the server memory on my Ubuntu 12.04 server

Environment Rackspace Ubuntu 12.04 Wordpress MySql The issue I have been experiencing quite serious out-memory-issues in the last couple of days. While I resolved one possible cause the issue I ...
4
votes
2answers
7k views

Is it necessary to manually rebuild a sendmail.cf file or is this done automatically on service restarts?

CentOS 5.x | SendMail I'm noticing inconsistent information regarding pushing changes from sendmail.mc Some documentation suggests that making changes to the sendmail.mc file requires two steps: ...
4
votes
1answer
5k 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
956 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
3k 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
2answers
2k 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
votes
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
votes
2answers
4k 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 ...
4
votes
1answer
470 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 ...
4
votes
2answers
715 views

Sendmail slow to accept emails

I have a PHP web app which is using SMTP to sendmail on localhost to send email. I would like sendmail to accept the mail request immediately and queue it for later sending, as I don't want to have ...
4
votes
4answers
5k 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
2answers
6k 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 ...
4
votes
3answers
1k 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
votes
0answers
77 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. ...
3
votes
5answers
541 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
7answers
10k 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 SPF-...
3
votes
1answer
7k 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 ...