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 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 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.
I'm using postfix to send some mail from my cloud server via a web page on my website that uses PHPmailer to do SMTP authentication. My cloud server has a dedicated IP for all inbound and outbound data. The problem I am having is that it sends roughly 75 - 100 messages successfully before it returns the following error for the remaining few hundred recipients in my list:
SMTP Error: The following recipients failed: example@example.com Mailer Error [URL] SMTP Error: The following recipients failed: example@example.com SMTP server error: 5.5.0 Sender already specified
I intend to install cryus-sasl, procmail and sendmail for my school. After I've finished the install of cyrus-sasl and procmail, I try to install sendmail. I have config the required setting of sendmail which let it support cryus-sasl in the file sendmail/devtools/Site/site.config.m4, then I build the main program of the sendmail and created the related user account and directories. It doesn't has any error. But when I try to build the program "makemap" and "mailstats", it has the similar error which said that there are an unrecognized option '-R/usr/local/ssl/lib' and can't find -lphclient. Here are the dump screen after I type the command "sh Build install" in the directory of program "makemap":
[root@chmsmail makemap]# sh Build install Configuration: pfx=, os=Linux, rel=2.6.18-194.el5PAE, rbase=2, rroot=2.6.18-194, arch=i686, sfx=, variant=optimized Making in /usr/local/src/sendmail/obj.Linux.2.6.18-194.el5PAE.i686/makemap cc -O2 -I. -I../../sendmail -I../../include -I/opt/nph/include -I/usr/local/ssl/include - code....
Anyone can tell me what should I do to tackle the error?
I'm running sendmail 8.14 which sends out thousands of email. I'm getting several timeout error on only a few particular hosts. What I found is almost all of them are Exim 4.69
maillog shows --> timeout waiting for input from ..@xxx during client greeting
after several tries, I finally got bounce back with
--> 451 4.4.1 reply: read error from xxx.com. .. Deferred: Connection timed out with xxx.com. Message could not be delivered for X day Message will be deleted from queue
When i search though maillog with all of those error and they all seems to be running Exim and they are different mail domains.
I'm running Sendmail with SASL Authentication and STARTTLS and this error always turns up in my log, even though the server works as a charm apart from that.
Iam using centos5.i had installed qmail as MTA.when iam login through squirrel mail it gives login error invalid username or password.And then i tried with domain.
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
Quote:
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
Quote:
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 am using Postfix on CentOS to send mail through a relayhost. The mail sends fine, but on certain clients such as the mail client on the iPhone or Windows Live Mail, the message is received with '(No Sender)' in the sender field. The Apple Mail client on the iMac works just fine.
Here is the PHP code I am using to send the mail code...
Wondering if there is a configuration setting in /etc/postfix/main.cf I can use to fix this problem. I have scoured the help files but have come up empty.
I recently modified sendmail.cf to use a third party SMTP server to send emails. It works great. But when I run sendmail from the command line, I have to specify the -C flag and force feed it the location of my sendmail.cf, or else it doesn't work.
So in other words, the following works great:
However, if I don't specify the -C flag, sendmail doesn't consider what's in the sendmail.cf and barfs:
I don't run sendmail as a daemon. I'm only using it to send emails. I know my modifications of sendmail.cf are correct because it works perfectly when I use the -C flag. I searched my disk to see if I could find another sendmail.cf on the machine and only the one in /etc/mail came up.
Why sendmail is not reading my sendmail.cf?
I'm running Sendmail version 8.14.2 on Fedora Core 8.
I want a mail server that can relay mails to the internet using GMail and fetch the mails of different accounts into the mail server and distribute them to their respective users. I am using Postfix, Fetchmail and Dovecot. I have a PC with 3 users.I use the PC having Ubuntu 9.04 and share the internet. We all send mail and retrieve mail. We do use Evolution and Mutt sometimes. We want to send our mails with our email_ids without even logging in.
Hostname mail.myhomepc.com Domain myhomepc.com
[code]....
I have created my custom certificate using SSL. I've created the Postfix's main.cf file following a tutorial on the net. Currently mails are going fine, but with our local email_ids. I want Postfix to rewrite our local email_ids with the equivalent email_id on the net.
After installing sendmail, I sent a mail for testing the mail I receive is from sender www-data and default email is www-data@dryaf-desktop. How do I change this email to something else ?
I vae Ubuntu, postfix. I need to forward e-mail based on sender. Can I do it with .forward ?
E-mail that comes from user@yahoo.com destined to user@mydomain.com to be forwarded to user@gmail.com. Other e-mail that comes from any addresse must not be forwarded.
I need to have a postfix server to rewrite the sender's address. For example, if the sender is: [URL], then the recipient would receive all emails from [URL] as [URL]. I tried using the generic file and created a table out of it, but this did not work:
postmap /etc/postfix/generic -rw-r--r-- 1 root root 9977 Dec 27 15:24 generic -rw-r--r-- 1 root root 12288 Dec 27 15:25 generic.db
I added this line to the generic text file:
[code]....
I am running two boxes with postfix 2.3.3. and 2.1.1 respectively. Both need this configuration. I also added this line:
smtp_generic_maps = hash:/etc/postfix/generic
on the main.cf file. However, this did not work. The one running postfix 2.3.3 is on Centos 5.5, the other one is on SuSe Enterprise 9.
Under folder /home/user there are two files : .autoreply (where is the message text) and .procmailrc where is the procmail for autoreply. So .procmailrc looks like this :
[code]...
And it works, returning to the sender the text from .autoreply file. BUT it send this text from the mail account which looks like this: name-from-/etc/passwd-file@server-hostname instead (in my case) [URL]... Under webmail (squirrelmail) the reply address is set as it should be. I looked up a bunch of Internet pages, to no avail. Also masquerade is not a option because my production system has two mail domains.
554 Your access to this mail system has been rejected due to the sending MTA's poor reputation. If you believe that this failure is in error, please contact the intended recipient via alternate means.
I have a server which runs postfix. The same physical server is running web and mail services for several (3) domains, which I have reserved for future use (nothing serious or valuable, just freetime activities). Server "physical" address (also static IP) is myhost.domain.com. Lets say the other domains it serves are first.fi, second.net ad third.com. I can receive mails OK sent to all of these, I have added those 3 "extra" domains to the mydestination line in main.cf. Sending e-mails also works fine, but the sender is [URL].. I want the sender to be firstname@first.fi
I tried setting sender_canonical_maps = hash:/etc/postfix/sender_canonical in main.cf, and sender_canonical contains:
and I run postmap /etc/postfix/sender_canonical, and e-started postfix. But if I send e-mail as user1, the sender becomes [URl].. so it re-writed the username part, but hot the hostname/domain part. I also tried setting smtp_generic_maps = hash:/etc/postfix/generic but the results were similar. What do I need to do to re-write sender for user1 (regardless of host/domain) to Firstname1@first.fi?
Im trying to get postfix to filter my outgoing mail and basically drop everything that is not in my hash table.
So far I managed to get this going
Code:
Code:
Unfortunately those rules also apply to incoming messages. My goal is to disallow users on my host to change their "MAIL FROM" to anything they like and restrict them to domains I specify. I'm aware that the local part still is variable and a user of domain "foo.com" could use a email of domain "bar.com", but still some of my troubles would be solved if I get this running.
This seems like a relatively simple question, but I haven't been able to figure it out from the documentation after a couple of hours of searching. I'm running postfix on my mail server, and the vast majority of my spam has the sender address spoofed to match the recipient address. I've got spamassassin up and running, and very little gets through that, so it's not a serious problem, but if possible I would like to be able to reject the mail before it arrives to reduce the system load.
Mail is sent locally via webmail, relaying is denied, so the only way that mail should be sent from the domain is via a connection from localhost. The basic idea I'm thinking of is if the MAIL FROM sender claims to be an address at the receiving domain, but is connected from a remote IP, the mail should be rejected.
