Ubuntu Installation :: Postfix Not Allowing Remote Smtp?
Apr 18, 2010
But I fully have my server and everything up, MySQL, PHP5, Apache2, Postfix, Courier, SQMail, can't remember what else atm.
I installed mailx and used the mail command to send an email to my external email address, worked just fine. sent it to another email, worked as well.
But the problem is, I do 'telnet localhost 25' to test it like they say, it connects. I run 'ehlo localhost' Nothing happens.
I've tried setting it up with Thunderbird on my home pc and it connects to the IMAP & POP servers just fine, but it cannot establish a connection with SMTP, I've tried changing the SMTP port to other ones, still no luck.
Oh BTW, I use Ubuntu 8.04 LTS (Hardy Heron)
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Oct 23, 2010
Try as I might I cant get postfix to send emails through an external email server (I can succesfully get client software to do it no trouble) After following the howto at:
[code]....
I get 5.0.0 errors re:
Code:
May 6 16:06:32 SERVER1 postfix/error[20357]: 2392F21438: to=<SOME_ADDRESS@hotmail.com>, relay=none, delay=0.17, delays=0.1/0.01/0/0.06, dsn=5.0.0, status=bounced (smtp.live.com)
Here's my main.cf
Code:
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
[code]...
I get basically the same error no matter what smtpserver/username/password combination I use leading me to believe its my setup and not my username/password
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May 5, 2010
Try as I might I cant get postfix to send emails through an external email server (I can succesfully get client software to do it no trouble) After following the howto at: [URL] I get 5.0.0 errors re:
Code:
May 6 16:06:32 SERVER1 postfix/error[20357]: 2392F21438: to=<SOME_ADDRESS@hotmail.com>, relay=none, delay=0.17, delays=0.1/0.01/0/0.06, dsn=5.0.0, status=bounced (smtp.live.com)
Here's my main.cf
Code:
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
[Code]....
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Jun 24, 2011
I've got an uber simple test mail script in php on my awesome new dev machine running Ubuntu:
PHP Code:
Unfortunately, something is preventing mail delivery. I can't tell from this error log whether it's the remote machine rejecting me or whether it's my machine rejecting the self-signed cert on the remote machine:
Code:
I'm wondering what I could change in my postfix configuration to remedy this problem.
I tried setting smtp_tls_security_level = may = may but this did not change anything.
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Oct 4, 2010
so i set out to change the default smtp port the server uses because my ISP blocks port 25 and i need the email to work in outlook. this morning i could receive email, but not send it. so i did some research and thought that i needed to edit the master.cf file in /etc/postfix/ by commenting out this line: smtp inet n - n - - smtpd -oand replace it with587 inet n - n - - smtpd (587 being the port i want to use)somewhere along the lines postfix server stopped running and now i cannot get it to start.if i try using SSH it crashes immediately and if i restart it in simple control panel nothing happens
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Feb 26, 2010
I followed this How To (https://help.ubuntu.com/community/Postfix) in order to add smtp authentication to my Postfix installation used as spam filter for my exhange server, and it'seem all ok; the only thing that I don't understand is where I list all the users (with passwords) that I authorize to send mail through my server...
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May 13, 2011
I'm using Ubuntu Server 10.04 and I can successfully relay mail generated by php scripts through an Exchange server.What I want to do is accept incoming mail from the Internet through postfix and relay it to the Exchange server but I want all mail that is not addressed to ...@mydomain.edu to be discarded.
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May 13, 2010
I'm running Postfix primarily as a local email server. There is no email coming in from other machines, and there are no other machines using it to send mail. But I'd like it to be able to send mail. I use Evolution for my normal email stuff, and it's configured to send mail to my ISP's smtp server, and that's working fine. But I occasionally send mail from the command line, using the "mail" or "mutt" utilities. (Mutt because the standard mail doesn't support attachments.) These don't use Evolution's configuration, they depend upon whatever is listening to port 25 - and that's Postfix. So all I should need to do is to give Postfix the smtp server, user name, and password. My problem is that Postfix has voluminous documentation online, and I haven't been able to find this simple configuration in it.
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Apr 7, 2010
I've got a server running 9.10, and I'm having a few issues with SMTP. It's got Postfix and Dovecot installed, and eventually I'll add content filtering, but I need to get past this issue first.
I know there's a lot of posts out there for Postfix issues, but I haven'tbeen able to find one specific to my issue.
IMAP and POP3 work fine through SSL, and the server can send mail without any problems. That's all fine and dandy, but I need to utilize an e-mail client (like evolution or outlook). Everytime I set up a user in Evolution, the smtp connection times out, or is refused. I know it's not a firewall issue. Port 25 is open, as well as 465. So I should be able to connect through SSL. I want to be able to connect through SMTP using the same credentials as IMAP.
Here's my main.cf file:
Code:
myhostname = mail.adamwgay.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
[Code].....
everytime I get things rolling, this issue pops up. I don't know if it's something I'm setting up wrong in the client, or if it's a configuration error on my part in postfix.
I'm also having a bit of an issue with my aliases. I've basically got a lot of addresses going to root, then root going to the main user, but it's not actually delivering the mail to the main user. It sends it straight to root.
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May 26, 2010
I have just built an internal postfix server for sending mail only, it's not accessible outside our network. I will be sending from our domain, Rewriting the from field to abc.com is turned on in the postfix config. A friend is telling me this will not work as they will do reverse lookups on our domain. What does this mean? Obviously the domain the email is sent from is a valid domain. If they do a lookup from the IP the mail came from it would be global crossing, our internet provider? These outbound emails are critical client reports, I want to make sure they are not seen as spam.
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Jan 2, 2011
I am setting up an ubuntu server, in order to use it with Joomla.
Does someone knows if is possible to use PostFix as SMTP server for Joomla?
If does; would be necessary to install IMAP or POP3, Webmail etc if I just want to send automatics mails via Joomla.
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Jun 9, 2011
I have postfix relaying email to the internet for my LAN I need to configure postfix to trust only one SMTP server to relay his emails to the internet
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Aug 5, 2010
I'm working on configuring a mail server on Ubuntu 8.04 using Postfix 2.5.1 and Courier 0.59.0. I don't want to have to open up specific networks for SMTP relaying, so I want my server to require authenticated SMTP sessions. I'm just confused on how to do this. Here's my main.cf file from Postfix:
[Code]...
It seems like getting this enabled is way more complicated than I expected, assuming I'm not on the wrong path.
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Apr 28, 2010
I installed webmin + postfix + dovecot + sasl2-bin to get a webserver running. I have fixed all the problems, but there is still one. I am totally new to sasl, so I am sorry if I made a stupid mistake.
[Code]....
Thunderbird gives the following error when trying to send mail: Sending of message failed. The message could not be sent because the connection to the SMTP server mail.virovene.org was lost in the middle of the transaction. Try again later or contact your network administrator. mail.err Apr 28 23:33:18 virovene postfix/smtpd[6264]: fatal: no SASL authentication mechanisms
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Jan 26, 2010
I've search high and low.. does anyone know how to configure Postfix/Dovecot to use another SMTP server (i.e. smtp.comcast.net) as my ISP blocks port 25?
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Dec 13, 2010
I am using the Postfix SMTP server for sending emails. However I just did a default installation and subsequently someone is sending spam using my SMTP server. I would like some help on securing my Postfix server and to block these mischievous emails being sent from my server.
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Sep 28, 2010
I want to allow all IPs to use my SMTP server running postfix. what should i write in mynetworks section?
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Jul 27, 2009
I have a linux box on my DMZ with postfix on it. I have exchange on our internal LAN on 10.152.0.104.
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Oct 27, 2010
I have the following config with Postfix:
Quote:
But it keeps coming up with:
Quote:
Is there any reason from these configs as to why this should be occuring?
This was the guided step by step tutorial I followed: [url]
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Mar 18, 2011
I have postfix installed on my computer to let scripts send email. I want to use my isp as the smtp server. In /etc/postfix/main.cf I have told postfix to use gmail as my smtp server using "relayhost = outgoing.verizon.net". However, when I send an email, it gets returned. The full email is included below (my server's address has been replaced with ***.com).
[code]...
I believe that I need to authenticate to [URL]... from postfix, but I am not sure how to add these directives to the config file.
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Mar 23, 2010
I just finish install & setup postfix & spamassasin. I can send & received email from my local area network. i already install webmail client & I can send received. When using my pda from outside my network I can received but I just can send email to my domain only. For other domain it's error relay access denied. Here my postfix configuration.
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Jan 2, 2010
configuring my postfix server to send mail over smtps port 465. My ISP (as is the case with many ISPs), is blocking outbound SMTP, so I need to configure postfix to relay my mail out through my ISPs SMTP servers.
I was able to get it to work with gmail, which uses port 587, by using SASL: [URL] but that configuration is less than ideal as gmail drops the "reply to" address so when people receive my email, it looks like it's from gmail instead of from my server.
If I use my ISP SMTP servers as a relay the "reply to" address is not stripped, but the relay uses ssl over port 465 instead of TLS. According to the SASL readme:
Quote:
Postfix does not deliver mail via TCP port 465 (the obsolete "wrappermode" protocol). See TLS_README for a solution that uses the "stunnel" command.
I've looked at the TLS_README and can't figure out what I need to do. how to configure this?
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Mar 1, 2011
I recently created a webserver to host my website, using a Ubuntu 8.10 based system. (With some help from my experienced brother of course).I now want to create a mailserver to go along with my website. In setting up postfix to work with gmail smtp servers, I ran into a lot of permission errors.
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Jan 26, 2011
I have installed CentOS 5.5 along with the Samba package. I have it configured (i believe), but when I try to access a share, it is not accepting my UN/PW. I have copied the smb.conf file from a working computer over to this one, but it is still not accepting my login. Anyone know of any other files I should check?
I have moved a working smb.conf file to this new box, and both computers have the same UN/PW's
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Sep 20, 2010
I have searched through piles of postfix and sendmail documentation but I'm not sure of the terminology to describe what I want to do so I'm never sure what solutions are workable. Null client, relay hosts. What I have already is a RHEL postfix server which sends and receives email. What I want to do is add a second postfix server to the network. The second server should accept only ssl smtp mail and forward it on to the main postfix server. Users shouldn't use it for normal internal sending/receiving. It's only to allow me to support ssl smtp from people working out of the office without messing about with the main postfix server. I thought a Null Client sounded likely but I don't think it will accept mail. Is it a relay host I'm trying to configure? Any pointers on configuring something to just accept secure smtp and forward?
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Mar 15, 2010
I am looking at setting up a multiple postfix SMTP servers for a single domain. Below is my requirement, I would appreciate if someone out there could guide me to achieve this using postfix..
1. Want to setup 2 postfix SMTP Server with 1 POP3 Server.
2. Server1 will host POP3 & SMTP services for domain "metallica.one".(IP: 1.1.1.1, MX: mx1.metallica.one)
3. Server2 will host only SMTP services for domain "metallica.one" (IP: 1.1.1.2, MX: mx2.metallica.one)
4. Server1 & Server2 will be used as load balancing for sending mails. (either manual settings in email client, or auto-loadbalancing is still preferred).
5. Mail received for domain metallica.one on Server2 should be pushed/forwarded/relayed to Server1 where POP3 services are running.
6. Outgoing mails for other domains from Server2 should be sent directly to the other-domain-recipients without relaying to Server1.
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Jul 2, 2010
My postfix is ok with receiving emails but i can send mail to my domain only [URL] When I want to send to other domains i receive this error (in the maillog):
Quote:
postfix/smtpd[14172]: NOQUEUE: reject: RCPT from 93-46-46-73.ip106.fastwebnet.it[93.46.46.73]: 554 5.7.1 <giannileggio@shoppeo.com>: Relay access denied; from=<info@sampledomain.com> to=<giannileggio@shoppeo.com> proto=ESMTP helo=<[36.234.52.97]>
it is the same via thunderbird or via telnet. This is my configuration
Quote:
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
[code]....
I used 'sampledomain' instead of my real domain
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Dec 2, 2010
I'm hoping someone here can help, as I've been beating my head on the wall for a week now with little advancement. I've found a number of tutorials on setting this up, however none of them have gotten me 100% of the way there. Here's my situation: home-based Fedora server (Core 8), running sendmail 8.14.2-1. Connecting to hosting company's smtp server over port 587, to bypass Verizon's blocking of port 25.
My /etc/mail/sendmail.mc file looks like this (comment lines removed):Quote:
divert(-1)dnl
define(`SMART_HOST', `smtp2.datarealm.com')dnl
define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 PLAIN')dnl
FEATURE(`authinfo',`hash -o /etc/mail/auth/client-info.db')dnl
define(`RELAY_MAILER', `esmtp')dnl
[Code]....
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Feb 11, 2011
I'm trying to set up my postfix server to relay mail (via a php cms) using Gmail's smtp on my account, but for some reason, Gmail returns an error code that StartTLS must be sent first, my postfix main.cnf file can be found at pastebin, because of this forum's text length I cannot paste my postfix main.cnf file as can be seen I have everything set and configured for Gmail, but postfix (for some unseen reason) can not send StartTLS. [URL].
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May 25, 2010
I'm trying to set up a basic smtp server on my local computer that I can send basic, unencrypted email through on port 25. I installed postfix, and I chose the following options:
Internet Site,
System Mail Name: localhost
Root and postmaster mail recipient: I left this blank
For other domains to accept mail, I entered : NONE, localhost
No force synchronous mail updates
Local networks: 127.0.0.0/8
[Code].....
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