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

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1answer
392 views

Sendmail adds X-Authentication-Warning for trusted users?

So, I've digged through tons of articles and answers to configure sendmail on Ubuntu 12.04 correctly but still my emails are being flagged with X-Authentication-Warning header by sendmail: X-...
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1answer
536 views

Sending mail using netcat - getaddrinfo: Name or service not known [closed]

i am trying to send a mail using netcat, and i am getting an error: nc: getaddrinfo: Name or service not known this is the command i am using /usr/bin/nc smtp.xxxxx.yy 25 < test.txt this is ...
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0answers
49 views

Why is my sendmail server sending to a backup route FIRST?

I have a sendmail server configured with the following settings in /etc/mail/mailertable: recipientdomain.example esmtp:[2.2.2.2]:[3.3.3.3] (I'm sorry about using fictitious values. Hopefully ...
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2answers
296 views

What exactly does “stat=Deferred: Connection refused by [x.x.x.x]” mean in sendmail logs?

Can someone please clarify what exactly a sendmail log entry for stat=Deferred: Connection refused by [x.x.x.x] means? At what point in the SMTP conversation can/will sendmail throw this error? ...
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1answer
38 views

Email from specific IP is not being received on server. Possibly malicious admin

A few days ago I requested SSH access to our old server where we currently host our email. We are in the process of moving over to a new host. Ever since requesting the access from the admin, emails ...
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0answers
27 views

My sendmail isn't accepting connections

I must be doing something wrong, but what? I have a brand new VPS, and I'm using Webmin to get Sendmail running. I'm just trying to accept mail for a certain domain and forward it to my other email ...
5
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3answers
9k 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 ...
3
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1answer
71 views

CentOS takes 10 seconds to start anything

I've got CentOS 6 with Apache, Sendmail and Proftpd installed. When I try to start anything on it, I mean anything, it takes 10 seconds. Sendmail? It takes 10 seconds to send something through PHP's ...
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1answer
148 views

Cant send mail due to PTR Records

I just installed sendmail on ubuntu 14.04 lts and configured a new domain. Somehow I must have overseen a config issue, as google mail is rejecting the message. looking at return message it tells me ...
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2answers
59 views

DNS and mail server: how to setup SPF properly?

Here's my problem: I have my server that does everything: webserver and sendmails, let's call him "hqf.com". My client bought another domain, let's call it "fly.com". I need to send "validation ...
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0answers
50 views

Hotmail is ignoring my SendMail() emails. Other providers OK

I have a slight problem. I send automatic emails to deliver digital products from my site, which is hosted at Linode and has a FQDN for email sending. All emails arrive properly to virtually all ...
0
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1answer
36 views

Detect file executes sendmail: No such file or directory [duplicate]

I have installed a Wordpress site and a phpBB3 forum in the same hosting (site in root and phpBB3 in a folder). Since yesterday, it works very slow. I detected some extrange and new files, and I ...
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0answers
38 views

mailx is working to send mails to external network. But mutt is not working?

I have a server with postfix service running. I am able to send mails to external network using mailx. But with mutt, I can only send mails to users inside network. What I might be the issue? ...
0
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1answer
91 views

Why does sendmail changes the FROM domain and how to configure the proper one?

I installed Jenkins and configured it to send emails as being sent from "jenkins@jenkins.example.com" but the address is always changed when email is being sent and I receive the mail as being sent ...
0
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3answers
262 views

Dovecot/postfix: forward all current messages

What I'm try to achieve it's pretty simple, and, after googling, its hard to believe I've been unable to find a solution. What I want is to forward all current messages (already delivered) of an user ...
0
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1answer
26 views

sendmail: complains about “Group writable directory” when that is not the case?

I can't start my sendmail service due to Group writable directory errors: $ service sendmail start Starting sendmail: 451 4.0.0 /etc/mail/sendmail.cf: line 87: fileclass: cannot open '/etc/mail/local-...
0
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2answers
162 views

Can't send mail via php with msmtp

I want the server able to send mail via gmail smtp. The installation of msmtp was successful. I able to send using msmtp via the command line. However, when I try to send via php, it got me this error....
0
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1answer
62 views

Sendmail doesn't use aliases

I'm trying to forward emails sent from the host to root to address admin@test.com. I've checked that alias file is being read: [root@localhost etc]# sendmail -d27.2 -bv root alias(root) root (, root)...
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1answer
31 views

Postfix Email tracing, where is it now

I have searched for an explicit answer to this question and haven't yet found one. I am new to administering Postfix so please forgive my ignorance. Company A sends out an enormous amount of email on ...
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1answer
9 views

Mail centos 5.5

I have an issue with user on a shared server. Sent mail bounces are sometimes returned to different users than owners? I have checked the from and return mail in headers and all fine but still ...
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0answers
177 views

Postfix Configuration on Ubuntu 15.04 VPS

this is my first time posting here so I apologize if anything (or everything) is out of line. Basically just have a Wordpress site I'm hosting on a VPS running Ubuntu 15.04, MariaDB, nginx. I have ...
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1answer
459 views

How to remove Received: (from apache@localhost) and sendmail version from headers

How can I remove Received headers from message? I want to hide apache user name, and sendmail version. Message (send from PHP script): Delivered-To: peter@mydomain.co.uk Received: by 10.182.138.73 ...
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1answer
123 views

SELinux preventing Fail2Ban from emailing notification via msmtp

I have msmtp as a null client connecting to my AWS SES account for SMTP, delivering alerts such as cron, monit and soon hopefully Fail2Ban to my email addresses. However, Fail2Ban isn't playing ball, ...
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1answer
129 views

How many simultaneous connections does SendMail allow/open when relaying new (and deferred) messages to a common downstream MTA?

I have several Sendmail servers which relay a lot (hundreds of thousands) of journaled emails to a downstream archive repository via SMTP. All of these emails have the same recipient domain (lets ...
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2answers
400 views

Determine why sendmail is failing to send

I have a form on a webpage that sends an email using sendmail on the same server. The recipient is a client that uses Google Apps for their email. In the form, I enter my email address. If I enter *@...
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2answers
94 views

Mitigating spam on Linux server where all MTA's (Postifix, PHP Mail() function) etc. are disabled [duplicate]

We have a Debian Squeeze server running a fairly standard LAMP stack (back in the days it was set up using the Perfect Server guide at Howtoforge, so we're using ISPConfig as our backend admin panel) ...
1
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1answer
122 views

How To Only Restrict PHP5/Apache to Send Mail Only To Local Users

I need some help. I am running lastest stable Ubuntu which hosts Apache/PHP5 and also delivers email. I host some WordPress sites for other users and have been waging a war for months now combatting ...
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1answer
49 views

MTA 554 daily report via POSTFIX or log monitoring?

It would be helpful to get a daily report of 554 coded email problems from postfix or other MTA programs, ie. if some mail servers think you are blacklisted, they will tell you details with urls on ...
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0answers
68 views

Sendmail has stopped working after editing resolv.conf. Why?

I previously resolved an issue with upstream timeout errors by changing the nameservers in my resolv.conf to Google's nameservers. While the upstream timeout and 504 errors were sorted by doing this, ...
1
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1answer
202 views

How can I set up sendmail to use CRAM-MD5 authentication?

I have sendmail running on a RedHat 7.1 machine. I want to configure it to authenticate using either PLAIN or CRAM-MD5. I have it working with PLAIN (so I know the client works, I have the username/...
3
votes
3answers
738 views

What is the sendEmail equivalent on CentOS 7?

I am trying to follow the steps below. But there is no sendEmail on CentOS 7. I have looked at a few alternatives like Postfix, but I am not sure of the script commands. Alternatively you can use ...
2
votes
1answer
158 views

Why is sendmail calling dns_getcanonname for domains of non-recipients in the To: header?

We've noticed an occasional repeatable problem in our sendmail config. The scenario is we receive a message from the internet with one of our users in the To: list, and one of the other users in the ...
2
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1answer
344 views

Send mail service start error

I installed sendmail on CentOS based on some tutorial. When I start sendmail, it showing sendmail failed error. Here the following command result: systemctl status sendmail sendmail.service - ...
2
votes
1answer
879 views

How to read contents of email in Sendmail

I work for an ISP in Australia. Recently a users account has been comprimised and is sending spam. How can I read the contents of a mail item in the mailq to find the authenticated user which has been ...
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1answer
24 views

Forget forwarded emails delivery errors

I have problem with configuring Sendmail, I've read a lot of topics on the net about similar problems but I didn't found a good answer for this scenario. Main problem is that my server has poor ...
0
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1answer
150 views

Force PHP mail to avoid using postfix root@myorigin; use /etc/mailname instead?

I recently posted an issue setting up a mail server with postfix and virtual aliases. I solved the problem here: Postfix/Dovecot - Multiple Domains and Multiple Linux Accounts To sum it up, I set ...
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0answers
88 views

Forward and delete all mails in a mailbox (linux)

I've had some configuration issues with my postfix-mailserver. Apparently A LOT of messages have been sent from other mailservers, to my postmaster address. I've already managed to redirect all ...
0
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2answers
923 views

Configure sendmail on RHEL 6.3 to send email using my Microsoft exchange account

I need to send email from RHEL host running 6.3 to my microsoft exchange email ID. Can any one please help me with detail steps for the configuration. I am new to Linux so tried some steps from ...
0
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1answer
428 views

sendmail masquerading doesn't change From address in envelope or header

I cannot find why masquerading isn't working for our server. I have been through a few dozen online explanations of the subject, here and on other forums, and according to them we are taking all the ...
0
votes
1answer
441 views

Connection refused by [127.0.0.1]

I am not very good with email servers. Here is what I need: I have a mailbox at fastmail.com with my custom domain (let's call it example.com). Now I want to set up my web server to relay emails ...
1
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1answer
127 views

Is “QUEUE=” in /etc/sysconfig/sendmail the same as the “-q” switch in sendmail?

CentOS 5.x, SendMail 8.14.4 My Sendmail server is currently configured to retry deferred messages every hour. In /etc/sysconfig/sendmail I have the following: DAEMON=yes QUEUE=1h I don't see ...
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2answers
101 views

Is smart hosting to an A record a violation of RFC-5321 section 1?

I have a sendmail server configured to smarthost to a downstream resource. The configuration is currently: define(`SMART_HOST',`relay:[vip.example.local]')dnl Since it's sending the A record for ...
0
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1answer
101 views

What is the correct way to configure the SendMail SMART_HOST option to perform MX lookups?

I think this question is related to this post but I feel that it's different enough to warrant a separate post. I currently have my Sendmail server configured to send to a downstream VIP. In my ...
3
votes
3answers
391 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 ...
2
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1answer
142 views

PHP/mail is sending emails to wrong mail server

Recently we have switched our email Exchange server from Intermedia to the Office 365. After that change web server (LAMP) is still sending emails to Intermedia. I have check dig MX for our domain and ...
5
votes
1answer
221 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. ...
0
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3answers
79 views

postfix or sendmail monitoring [closed]

I’m interested in alerting a support team in email when mail is backing up and not being relayed as expected, ie sending is delayed. I tried in nagios, there isn't any solution. I tried with logwatch, ...
1
vote
1answer
60 views

Restrict only 1 file to use sendmail

I want to restrict access to sendmail process, to only 1 php file /var/www/mysite/contact.php How can I do this? Maybe there is a trick with Iptables or sendmail configuration? I want to secure ...
0
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1answer
45 views

Sendmail sends unsolicited emails [duplicate]

I have a problem with sendmail. All of the sudden it started sending emails that its not supposed to send (obviaou spam messages about viagra, porn etc.). I checked some tools that supposedly check ...
1
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1answer
137 views

What is the best way to harden a postfix null client on an exploited php webserver?

We use postfix as a null client to send out mail from a php webserver via sendmail. We host our incoming mail servers elsewhere and use a SPF record to authorise the server to send emails from our ...