General :: Add PHP User As Trusted Sender In Sendmail?
Jul 7, 2010
I have a mail script that has been running on my website for several years. One problem I had with the script was when a bad address was put in, the mail was rejected to the server rather than to the sender. I have now recently added a fifth parameter to the mail script using the -f sendmail option to set the return path.
The user that the webserver runs as should be added as a trusted user to the sendmail configuration to prevent a 'X-Warning' header from being added to the message when the envelope sender (-f) is set using this method. For sendmail users, this file is /etc/mail/trusted-users. I do have the 'X-Warning' header on e-mails sent with this script and have asked my server administrator for some help in adding "the user that the Web server runs as" as a trusted user.
We're using mutt to send out a daily email through cron. The only problem is that half the people aren't getting it, because its getting rejected as coming from an invalid address. Right now its sending out as username@localhost.localdomain.
How can I change this? I found the sendmail.cf, which I believe previous people have been editing directly, which from what I read isn't the best way to configure sendmail.
For a project that I have been assigned to, I need to send emails to a business partner(business_partner.com) from one production server. However, my emails neither reach their destination nor bounce back to me.
Working with our business partner's IT support, the following error was discovered in their maillogs:
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Further analysis by my IT support shows that emails are successfully sent out ("Message accepted for delivery"):
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The app I coded is not using a public internet email address (e.g. me@hidden_domain_name.com) to send these notifications.
Instead, it uses an intranet email address (the server's where my code resides: user_name@servername.hidden_domain_name.com).
We created an alias but it made no change. Would adding my public internet email address to "trusted-users" file (we use sendmail)
i have installed redhat 5.3 and install sendmail on it.it is working perfectly fine.my question is|:
(1) can i restrict the sender and receivers email in sendmail?eg. i want to do that i want to allow only particular email addresses to send and receive and all other will be discarded (2) i made aliases for all user but it only receives received mail copy i want both sent and receive mail copy in aliases.
I got one last stop until I've fully configured my Sendmail server. I want the server to verify which address the sender is using when sending mail. Even though authenticated via SMTP AUTH or mailing from an IP listed as RELAY in access.db, the user should not be able to use whichever address he likes.
Ideally, I would like Sendmail to use a file that looks something like this: Username sername@Server.org
where, if logged in with Username, the only accepted sender address is Username@Server.org. As of now, Sendmail just verifies that the sender domain exists and then relays which I don't like. This also applies to a lot of other servers as well... for example in the cases where ISPs have blocked outgoing port 25 and let all their users use their SMTP server. I assume, if they don't use SMTP AUTH which is not the case where I am, that they have their entire IP range listed as RELAY and therefore, using my ISPs SMTP when in their net, I can send mail as whomever I like as long as the sender domain exists.
I've had a look at filters but haven't found any suitable and I assume that this might be realised through a Ruleset or something. What do you think? Have I missed something making this a really stupid suggestion or am I on to something? It would make my day
I'm working on setting up a computer lab for my kids' school, and am planning to use Ubuntu LTSP and Sabayon User Manager to lock things down.
When I edit a profile in Sabayon, and create the default desktop icons I'd like them to have (Firefox for example), when the user logs in the icon is generic and when clicked says:
"The application launcher Firefox.desktop is not marked as trusted. If this application launchers source is unknown to you then it may be unsafe to launch."
If I click "Mark as Trusted", the Firefox icon pops up and all is well. However whenever a new user logs in, they have to go through this process and I'm worried it may confuse them.
Why are application launchers created by Sabayon not trusted by my LTSP users?
I'm trying to configure our mail server to block email from a specific sender reaching a specific recipient. In other words, if one of our employees is getting harassed by a 'stalker', how would one go about blocking, at the MTA (Sendmail) level, a specific sender email address from reaching a particular users inbox? We do not want to capture the email - simply block it before it consumes server resources.The Sendmail server (MTA) is a front end to our Exchange server so no user accounts exist on the Linux server. We simply use it as a SPAM and Virus scanner then forward clean email to the Exchange server.
i'm in search of Script that sends a mail to the user if the mount point goes beyond 80% of its full space. send mail is configured in the system so that it can communicate with mail server.
I checked relay system using IP address it working gr8, but I want to implement user based authorization in relay server. but no idea where to make changes in sendmail.mc.. and my outlook asking for password again and again..whats role of openssl in user based authentication ?
I'm running Postfix in slackware 12.1. The mails are stored in /var/spool/mail/username. When a user's mailbox size got more than 200MB, the user can't check their mail. when it happend the log shows:
Apr 4 10:04:11 ns1 popa3d[2391]: Authentication passed for userX Apr 4 10:04:11 ns1 popa3d[2391]: Failed or refused to load /var/spool/mail/userX
I've tried to configure the mail service in RHEL6 but seems both sendmail and postfix can't use local user located in /etc/passwd.
Like, user Tommy and Jake they got User Unknow from maillog Tommy:x:506:507::/home/Tommy:/bin/bash Jake:x:507:508::/home/Jake:/bin/bash But IF I use users' home folder not located in /home then it can go throught.mailuser2:x:513:514::/rhome/mailuser/mailuser2:/bin/bash mailuser3:x:514:515::/rhome/mailuser/mailuser3:/bin/bash
I would like to modify my init.gz and add udp-sender to this image. After copying the program compiled on my system to init image I have error when I try run udp-sender: udp-sender not found When I checked ldd I saw that the some libraries are missing. I copied them from my system but still got the same error. how can I compile program for my init.gz?
I am trying unsuccessfully to have a more permanent fix so I can receive emails from an invalid domain. The message is 'Sender address rejected: Domain not found' in the postfix mail logs. Fair enough, there may be an A record or MX record problem there, but there is nothing I can do about this with the Sender at present. Mail *will* come through from the invalid domain if I delete
Code:
reject_unknown_sender_domain
from the list at: smtpd_recipient_restrictions in /etc/postfix/main.cf (see coded area below for full list). I have added the Domain in question as an 'OK', both by name and by IP address, to: /etc/postfix/recipient_access, then used postmap to successfully create the database which appears as: recipient_access.db
ie recipient_access (not recipient_access.db) has contents: invalid-domain-name.com OK ; the space betw is a tab space 123.456.789.012OK ; the space betw is a tab space I suspect the failure is something to do with postmap and the recipient_access.db database file created by postmap, but just cannot work this out. Running: postconf -d indicates that the hash format is the default database format
As indicated below,
Code:
check_recipient_access hash:/etc/postfix/recipient_access is listed up front in smtpd_recipient_restrictions Postfix was restarted on all occassions Everything above was done as root and permissions on the .db files are the same as other files in /etc/postfix
Request your help in writing a shell script for the following requirement:
1) scan each incoming mail with conditions on sender name and subject 2) scan the mail body for set of characters and email them.
general usage is as follows: I get a mail as follows from: [URL]... subject : Urgent, reply body : name : xyz contact : 12345 the script should mail the following as subject line: n:xyz c:12345 I know procmail is a good option for this, but I'm compelled to use shell script
I want to know how can I use sender an receiver of the email in name of file for storing mail in procmailrc. I made one but it does not work.
Quote:
SUBJECT=`formail -xSubject:` # regular field FROM=`formail -rt -xTo:` # special case :0 b * ^FROM.* | sed -e '/^To: +?[0-9]*$/,/report/!d' > ${FROM}${SUBJECT}--`mktemp 20`date +%y-%m-%d-%S--`XXXXXX`
it works when I use :
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| sed -e '/^To: +?[0-9]*$/,/report/!d' > `mktemp 20`date +%y-%m-%d-%S--`XXXXXX`
I have installed postfix and dovecot on my server and thought postfix will not only take SMTP connection from my e-mail client like Outlook, but also handles "mailx" commands from the server. However, it looks like sendmail is still responsible for sending mails from "mailx". I tested this by turning it on/off using "service sendmail stop" and "service sendmail start". Mails sent using "mailx" will only be sent when sendmail is up. When I did "yum info sendmail", it lists sendmail as an installed package. Is is safe to remove sendmail by running "yum erase sendmail", and let postfix handles "mailx" also?
I am using webmin for my daily tasks. I have fedora 13, whenever I click on ''Sendmail M4 Configuration'' or Outgoing Addresses (generics)'' I get the following error message
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The Sendmail M4 configuration base directory /usr/share/sendmail-cf was not found on your system, or is not the correct directory. Maybe it has not been installed (common for packaged installs of Sendmail), or the module config is incorrect. I read documentation at sendmail.org, it seems that structure of directories for send mail has been changed in version sendmail-8.1.4 shipped with FC13. In webmin config module we have
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Sendmail M4 base directory = /usr/share/sendmail-cf
which is not there. I did a locate / sendmail-cf on the command line, it finds nothing
I have been trying to set up ssmtp so I can send email using Gmail's ssmtp servers. However, when I try to send mail (using mailx), I get the following message:
Code:
Can't send mail: sendmail process failed
Here's the last line from dmesg (the only one applicable, according to the timestamps and message content):
Code:
[484114.608378] sendmail[17975]: segfault at 0 ip b7dbbbf3 sp bfb0dc4c error 4 in libc-2.11.2.so[b7d44000+14e000]
Here's my ssmtp.conf:
Code:
# # /etc/ssmtp.conf -- a config file for sSMTP sendmail. #
We're running a sendmail server on a fedora core 9 which we've configured recently. The problem is, the server is working fine but there are some e-mails that enter our server but doesn't get forwarded to the user.
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Here it says "stat=Sent" but nothing from the above mail address has been received on the client's inbox. We've experienced this with Microsoft Outlook, Outlook Express and Thunderbird alike so far with Two(2) of our user accounts.
I use ldap to provide account and home directory services for sendmail.Unfortunately,sendmail occasionally (rarely) rejects a message with a "User unknown" status when the user is a legitimate user that has routinely been recognized in previous messages.I have not yet found a reason to suspect that the ldap server is failing to respond properly or in timely fashion to queries.However, since I believe this information is cached by nscd on the local mail server, I am suspicious that the problem may rest with nscd and its database.Is anyone aware of rather random failures to obtain correct information from an ldap query that is actually related to nscd?Also, I decided to just treat nscd as an application for purposes of this post
