Trying to configure Exim mail server using this article. I can use this server inside my local network but when I try to use it from internet I taking some errors. Ports 10000-20000 translate to server machine. Everything I doing inside the docker image of CentOS 7. Host machine with CentOS 7 too.
Abbreviations:
test_domain.tk - my test domain
test1, test2 - test users
test#external.com - test external email
123.456.789.876 - my external ip (I have router with NAT)
10.0.7.30 - docker's tunnel
Starting docker with command: docker run -d --name mail -h test_domain.tk -p 10025:25 -p 10587:587 -p 10465:465 -p 10143:143 -p 10993:993 mail/server:localwork start_server
start_server:
#!/bin/bash -e
/usr/sbin/dovecot && /usr/sbin/exim -v -bdf -q30m
/etc/exim/exim.conf:
primary_hostname = test_domain.tk
domainlist local_domains = # : localhost : test_domain.tk
domainlist relay_to_domains =
hostlist relay_from_hosts =
acl_smtp_mail = acl_check_mail
acl_smtp_rcpt = acl_check_rcpt
acl_smtp_data = acl_check_data
acl_smtp_mime = acl_check_mime
av_scanner = clamd:/var/run/clamd.exim/clamd.sock
tls_advertise_hosts = *
tls_certificate = /etc/ssl/default.crt
tls_privatekey = /etc/ssl/default.key
daemon_smtp_ports = 25 : 465 : 587
tls_on_connect_ports = 465
allow_domain_literals
never_users = root
auth_advertise_hosts = *
rfc1413_hosts = *
rfc1413_query_timeout = 5s
ignore_bounce_errors_after = 2d
timeout_frozen_after = 7d
begin acl
acl_check_mail:
deny condition = ${if eq{$sender_helo_name}{} {1}}
message = Nice boys say HELO first
warn condition = ${if eq{$sender_host_name}{} {1}}
set acl_m_greylistreasons = Host $sender_host_address lacks reverse DNS\n$acl_m_greylistreasons
accept
acl_check_rcpt:
accept hosts = :
control = dkim_disable_verify
deny message = Restricted characters in address
domains = +local_domains
local_parts = ^[.] : ^.*[#%!/|]
deny message = Restricted characters in address
domains = !+local_domains
local_parts = ^[./|] : ^.*[#%!] : ^.*/\\.\\./
accept local_parts = postmaster
domains = +local_domains
require verify = sender
accept hosts = +relay_from_hosts
control = submission
control = dkim_disable_verify
accept authenticated = *
control = submission
control = dkim_disable_verify
require message = relay not permitted
domains = +local_domains : +relay_to_domains
require verify = recipient
accept
acl_check_data:
warn condition = ${if !def:h_Message-ID: {1}}
set acl_m_greylistreasons = Message lacks Message-Id: header. Consult RFC2822.\n$acl_m_greylistreasons
accept
acl_check_mime:
deny message = Blacklisted file extension detected
condition = ${if match \
{${lc:$mime_filename}} \
{\N(\.exe|\.pif|\.bat|\.scr|\.lnk|\.com)$\N} \
{1}{0}}
accept
begin routers
dnslookup:
driver = dnslookup
domains = ! +local_domains
transport = remote_smtp
ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
# if ipv6-enabled then instead use:
# ignore_target_hosts = <; 0.0.0.0 ; 127.0.0.0/8 ; ::1
no_more
system_aliases:
driver = redirect
allow_fail
allow_defer
data = ${lookup{$local_part}lsearch{/etc/aliases}}
# user = exim
file_transport = address_file
pipe_transport = address_pipe
userforward:
driver = redirect
check_local_user
# local_part_suffix = +* : -*
# local_part_suffix_optional
file = $home/.forward
allow_filter
no_verify
no_expn
check_ancestor
file_transport = address_file
pipe_transport = address_pipe
reply_transport = address_reply
procmail:
driver = accept
check_local_user
require_files = ${local_part}:+${home}/.procmailrc:/usr/bin/procmail
transport = procmail
no_verify
localuser:
driver = accept
check_local_user
# local_part_suffix = +* : -*
# local_part_suffix_optional
transport = local_delivery
cannot_route_message = Unknown user
begin transports
remote_smtp:
driver = smtp
remote_msa:
driver = smtp
port = 587
hosts_require_auth = *
procmail:
driver = pipe
command = "/usr/bin/procmail -d $local_part"
return_path_add
delivery_date_add
envelope_to_add
user = $local_part
initgroups
return_output
local_delivery:
driver = appendfile
directory = $home/Maildir
maildir_format
maildir_use_size_file
delivery_date_add
envelope_to_add
return_path_add
address_pipe:
driver = pipe
return_output
address_file:
driver = appendfile
delivery_date_add
envelope_to_add
return_path_add
address_reply:
driver = autoreply
begin retry
* * F,2h,15m; G,16h,1h,1.5; F,4d,6h
begin rewrite
begin authenticators
dovecot_login:
driver = dovecot
public_name = LOGIN
server_socket = /var/run/dovecot/auth-client
server_set_id = $auth1
dovecot_plain:
driver = dovecot
public_name = PLAIN
server_socket = /var/run/dovecot/auth-client
server_set_id = $auth1
exim log:
8 LOG: MAIN
8 exim 4.84 daemon started: pid=8, -q30m, listening for SMTP on port 25 (IPv6 and IPv4) port 587 (IPv6 and IPv4) and for SMTPS on port 465 (IPv6 and IPv4)
16 LOG: host_lookup_failed MAIN
16 no host name found for IP address 123.456.789.876
16 LOG: MAIN REJECT
16 H=([10.0.7.30]) [123.456.789.876] X=SSLv3:DHE-RSA-AES128-SHA:128 F=<test1#test_domain.tk> rejected RCPT <test#external.com>: relay not permitted
16 LOG: lost_incoming_connection MAIN
16 unexpected disconnection while reading SMTP command from ([10.0.7.30]) [123.456.789.876]
When I try to connect from internet I got timeout error in mail client and empty logs in Exim. It's probably problem of work with router. How to make it works?
Ask me if you need more data. Thanks in advance.
You have your docker internal ports (for example 10025) mapped to standard smtp ports (for example 25), but you have exim listening on the standard ports instead of the mapped internal ports. Configure exim to listen on 10025, 10465, 10587 and see if the behavior changes.
It seems there's an issue with reverse DNS lookup according to this ancient post. Try disabling host_lookup and see if that works:
host_lookup = 0.0.0.0/0
If it does you'll have to fix your DNS settings to map the right domain to your host.
Related
I have set up a simple client-server communication code and it works well in my computer when my computer itself acts as a server and the client.
Now I am trying to run this same code on two different computers in different networks( different locations) where my computer will act as a server and my friend's computer as a client.
I have done port forwarding in my router as well as in my friend's router for the port which we are trying to communicate. We both have set up a static IP in our internal network behind the router. We both had shutdown the firewall while running the code.
I am running my code on Jupiter notebook and the same is my friend too.
here is my server code:
import socket
import threading
HEADER = 64
PORT = 5064
SERVER = '0.0.0.0'
ADDR = (SERVER, PORT)
FORMAT = 'utf-8'
DISCONNECT_MESSAGE = "quit"
Receive_from_client = "get info"
server = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
server.bind(ADDR)
def handle_client(conn, addr):
print("\n" + f"[NEW Connection] detected from IP: {addr[0]} & Port:{addr[1]} ")
conn.send(f"connected to server {ADDR}".encode(FORMAT))
connected =True
while connected:
msg_length = conn.recv(HEADER).decode(FORMAT) # decode the msg from byte to utf-8 format
if msg_length:
msg_length = int(msg_length)
msg = conn.recv(msg_length).decode(FORMAT)
if msg == DISCONNECT_MESSAGE:
connected = False
print(f" [Client][{addr}] {msg}")
print("Your session is disconnected")
break
if msg == Receive_from_client:
print("\n" + f"Send your msg to client with IP: {addr[0]}")
thread = threading.Thread(target = send2client, args = (conn, addr))
thread.start()
print(f" [Client][{addr}] {msg}")
conn.send(f"Msg received by server with IP:{addr[0]}".encode(FORMAT))
conn.close()
server.close()
def start():
server.listen()
print("\n"+ f"[LISTENING] Server is listening from IP: {SERVER} ")
while True:
conn, addr = server.accept()
thread = threading.Thread(target = handle_client, args = (conn, addr))
thread.start()
Here is the client code
import socket
import threading
HEADER = 64
PORT = 5064
FORMAT = 'utf-8'
DISCONNECT_MESSAGE = "quit"
SERVER = '103.192.207.250' # SERVERS public IP
ADDR = (SERVER, PORT)
client = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
client.connect(ADDR)
def send2server():
while True:
msg = input()
message = msg.encode(FORMAT)
msg_lenght = len(message)
send_length = str(msg_lenght).encode(FORMAT)
send_length += b' '*(HEADER - len(send_length))
client.send(send_length)
client.send(message)
print(client.recv(2048).decode(FORMAT))
if msg == DISCONNECT_MESSAGE:
print("session closed")
client.close()
def start():
print("\n"+ f"[LISTENING] client is listening from IP: {ADDR} ")
send2server()
I have opened the port by going on windows firewall defender and selecting new inbound and outbound rules to open 5064 TCP port.
but still, the code doesn't works..
my server keeps waiting for connection and the client-side after few seconds of running gives this error:
TCP error code 10060: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
Even while my server is listening from port 5064 when I scan this port to check if the port is open or not it says closed.
How do I check if the port I have forwarded is for sure open and also how do I get this thing work?
I have tried all of this and if there is any other thing I am missing please tell. I am struggling to get this work for the past 3 days.
How would you send an email using Lua?
The team I'm working with have a mail server, is that of any relevance?
Here is the code I'm using:
function send_email (email_to, email_subject, email_message)
local SMTP_SERVER = "mail.server.com"
local SMTP_AUTH_USER = "mail#domain.com"
local SMTP_AUTH_PW = "password"
local SMTP_PORT = "587"
local USER_SENDING = "mail#domain.com"
local smtp = require("socket.smtp")
local rcpt = {email_to}
local mesgt = {
headers = {
to = email_to,
from = USER_SENDING,
subject = email_subject
},
body = email_message
}
local r, e = smtp.send{
from = USER_SENDING,
rcpt = rcpt,
source = smtp.message(mesgt),
server = SMTP_SERVER,
port = SMTP_PORT,
user = SMTP_AUTH_USER,
password = SMTP_AUTH_PW
}
end
Using the LuaSocket SMTP API.
Your example looks correct, double check the SMTP settings and log the results:
local r, e = smtp.send{
from = USER_SENDING,
rcpt = rcpt,
source = smtp.message(mesgt),
server = SMTP_SERVER,
port = SMTP_PORT,
user = SMTP_AUTH_USER,
password = SMTP_AUTH_PW
}
-- Log SMTP results and potential errors
print(r, e)
Also, ensure that you're properly chaining your SMTP message using the LTN12 module API when it is multipart:
body = ltn12.source.chain(
ltn12.source.file(io.open("image.png", "rb")),
ltn12.filter.chain(
mime.encode("base64"),
mime.wrap()
)
)
Or the Mime module API for the EOL:
body = mime.eol(0, [[
Lines in a message body should always end with CRLF.
The smtp module will *NOT* perform translation. However, the
send function *DOES* perform SMTP stuffing, whereas the message
function does *NOT*.
]])
There is a much more verbose example of this in the LuaSocket SMTP API documentation.
i'm setting up a mail server [postfix] which with use Ciphermail as RelayHost.
With the setup i'm able to send mail to external domain but when i'm replying from external domain i'm getting following error.
ciphermail [relay host] main.cf
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
content_filter = djigzo:[127.0.0.1]:10025
djigzo_after_filter_message_size_limit = 512000000
djigzo_before_filter_message_size_limit = 10240000
djigzo_mailbox_size_limit = 512000000
djigzo_mydestination = localhost, svitsolutions.in, mx1.svitsolutions.in
djigzo_myhostname = mx1.svitsolutions.in
djigzo_mynetworks = 103.246.45.0/24, 192.168.15.0/24, 192.168.15.52/32
djigzo_parent_domain_matches_subdomains = relay_domains
djigzo_rbl_clients =
djigzo_reject_unverified_recipient = reject
djigzo_relay_domains = svitsolutions.in
djigzo_relay_transport_host = mail.svitsolutions.in
djigzo_relay_transport_host_mx_lookup =
djigzo_relay_transport_host_port = 25
djigzo_relayhost =
djigzo_relayhost_mx_lookup = mx
djigzo_relayhost_port = 25
djigzo_smtp_helo_name = mail.svitsolutions.in
djigzo_unverified_recipient_reject_code = 450
local_recipient_maps =
local_transport = $mydestination
mail_name = mx1.svitsolutions.in
mailbox_size_limit = ${djigzo_mailbox_size_limit}
message_size_limit = ${djigzo_after_filter_message_size_limit}
mydestination = ${djigzo_mydestination}, mail.svitsolutions.in, svitsolutions.in
myhostname = ${djigzo_myhostname}
mynetworks = 127.0.0.0/8, [::1]/128, ${djigzo_mynetworks}
parent_domain_matches_subdomains = ${djigzo_parent_domain_matches_subdomains}
queue_minfree = 768000000
recipient_delimiter = +
relay_domains = ${djigzo_relay_domains}
relay_transport = relay${djigzo_relay_transport_host?:${djigzo_relay_transport_host_mx_lookup:[}${djigzo_relay_transport_host}${djigzo_relay_transport_host_mx_lookup:]}:${djigzo_relay_transport_host_port}}
relayhost = ${djigzo_relayhost_mx_lookup:${djigzo_relayhost?[}}${djigzo_relayhost}${djigzo_relayhost_mx_lookup:${djigzo_relayhost?]}}${djigzo_relayhost?:${djigzo_relayhost_port}}
smtp_helo_name = ${djigzo_smtp_helo_name?$djigzo_smtp_helo_name}${djigzo_smtp_helo_name:${myhostname}}
smtpd_authorized_xforward_hosts = 127.0.0.1/32, 192.168.15.52/32
smtpd_banner = $myhostname ESMTP $mail_name
smtpd_discard_ehlo_keywords = silent-discard, dsn, etrn
smtpd_etrn_restrictions = reject
smtpd_recipient_restrictions = permit_sasl_authenticated permit_mynetworks reject_unauth_destination ${djigzo_rbl_clients} ${djigzo_reject_unverified_recipient? reject_unverified_recipient}
unverified_recipient_reject_code = ${djigzo_unverified_recipient_reject_code}
When im removing the relay host [ciphermail] from architecture i'm able to receive mail from external domain.
please suggest the answer.
It looks like you have enabled "Reject unverified recipient". The 450 error message reports that the recipient address cannot be verified. The default Postfix configuration for CipherMail is that Postfix will function as a store and forward server and no local mailboxes. However you have configured mydestination (indirectly by setting djigzo_mydestination) to locally handle mail for svitsolutions.in but you also configured relay_domains (indirectly by setting djigzo_relay_domains) to svitsolutions.in.
With the current config, email sent to svitsolutions.in will be handled by the local transport (which will then store the email locally). However in the default Postfix master.cf config, the local transport is disabled because in the default config, email should not be locally stored. Because the local transport is not available, the recipient verification will fail.
If you want to store email locally you should re-enable the local transport (see main.cf and master.cf) and make sure that a local user is available. If you do not want to store mail locally on the system but only act as a relaying server, set djigzo_mydestination and mydestination to an empty value.
I am searching for days to find out how can I set Office365 SMTP server in my VB6 application. My code is working properly with port 465 and other mail servers.
BUT it is not working with port 587 and smtp.office365.com
Is there any way I could have TLS via 587 in VB6?
Thanks
With this code, I get to send mail using CDO to Office365.
Private Message As CDO.Message
Private Attachment, Expression, Matches, FilenameMatch, i
Sub enviar_mail()
Set Message = New CDO.Message
Message.Subject = "Test Mail"
Message.From = "YourEmail#yourdomain.com"
Message.To = ""
Message.CC = ""
Message.TextBody = "my text body here"
Dim Configuration
Set Configuration = CreateObject("CDO.Configuration")
Configuration.Load -1 ' CDO Source Defaults
Configuration.Fields.Item("http://schemas.microsoft.com/cdo/configuration/sendusing") = 2
Configuration.Fields.Item("http://schemas.microsoft.com/cdo/configuration/smtpserver") = "smtp.office365.com"
Configuration.Fields.Item("http://schemas.microsoft.com/cdo/configuration/smtpserverport") = 25
Configuration.Fields.Item("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate") = 1
Configuration.Fields.Item("http://schemas.microsoft.com/cdo/configuration/sendusername") = "YourEmail#yourdomain.com"
Configuration.Fields.Item("http://schemas.microsoft.com/cdo/configuration/sendpassword") = "YourPass"
Configuration.Fields.Item("http://schemas.microsoft.com/cdo/configuration/smtpusessl") = True
Configuration.Fields.Update
Set Message.Configuration = Configuration
Message.Send
End Sub
This code worked for me until a few days ago when we switched ISP's (or maybe something changed coincidentally on the server side). If I specify port 587, I get a transport error and have not found the solution for that with VBA. Please let me know if this works for you and if you find a way to use 587. (Port 25 doesn't work for me either, same error.)
Public Function SMTPSend(vSendTo, vsubject As Variant, vmessage As Variant)
'This works
Set emailObj = CreateObject("CDO.Message")
emailObj.From = "name#myemail.com"
emailObj.To = vSendTo
emailObj.Subject = vsubject
emailObj.TextBody = vmessage
'emailObj.AddAttachment "c:\windows\win.ini"
Set emailConfig = emailObj.configuration
emailConfig.Fields("http://schemas.microsoft.com/cdo/configuration/sendusing") = 2
emailConfig.Fields("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate") = 1
emailConfig.Fields("http://schemas.microsoft.com/cdo/configuration/smtpserver") = "smtp.office365.com"
'Must exclude port if specifying SSL
'emailConfig.Fields("http://schemas.microsoft.com/cdo/configuration/smtpserverport") = 587
emailConfig.Fields("http://schemas.microsoft.com/cdo/configuration/smtpusessl") = True
emailConfig.Fields("http://schemas.microsoft.com/cdo/configuration/sendusername") = "name#myemail.com"
emailConfig.Fields("http://schemas.microsoft.com/cdo/configuration/sendpassword") = "mypassword"
emailConfig.Fields.Update
emailObj.Send
If Err.Number = 0 Then SMTPSend = True Else SMTPSend = False
End Function
There seem to be a number of posts on various forums suggesting that the CDO library doesn't work with port 587, but that's not true. I think the real issue is that SMTP services using port 587 are doing so because they require STARTTLS authentication and the http://schemas.microsoft.com/cdo/configuration/smtpusessl config option is specific to SSL, not TLS (I know, I know - not the most accurate description but it'll suffice for now).
Instead, there is another setting - http://schemas.microsoft.com/cdo/configuration/sendtls - that does support TLS, so using this with port 587 works fine:
config.Fields("http://schemas.microsoft.com/cdo/configuration/sendusing").Value = 2 '2 = cdoSendUsingPort
config.Fields("http://schemas.microsoft.com/cdo/configuration/smtpserver").Value = "smtp.example.com"
config.Fields("http://schemas.microsoft.com/cdo/configuration/smtpserverport").Value = 587
config.Fields("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate").Value = 1 '1 = cdoBasic
config.Fields("http://schemas.microsoft.com/cdo/configuration/sendusername").Value = "my_username"
config.Fields("http://schemas.microsoft.com/cdo/configuration/sendpassword").Value = "myy_very_secret_password"
config.Fields("http://schemas.microsoft.com/cdo/configuration/sendtls").Value = True
config.Fields("http://schemas.microsoft.com/cdo/configuration/smtpconnectiontimeout").Value = 60
config.Fields.Update()
This is what worked for me:
flds("http://schemas.microsoft.com/cdo/configuration/sendusing") = 2
flds("http://schemas.microsoft.com/cdo/configuration/smtpserver")= "smtp.office365.com"
flds("http://schemas.microsoft.com/cdo/configuration/smtpserverport")= 25
flds("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate")= 1
flds("http://schemas.microsoft.com/cdo/configuration/sendusername")= "name#myemail.com"
flds("http://schemas.microsoft.com/cdo/configuration/sendpassword") = "mypasword"
flds("http://schemas.microsoft.com/cdo/configuration/smtpusessl")= True
flds("http://schemas.microsoft.com/cdo/configuration/smtpconnectiontimeout")= 60
I don't know if you could fix it, but I got it with this:
Private Sub Command1_Click()
Dim oSmtp As New EASendMailObjLib.Mail
oSmtp.LicenseCode = "TryIt"
' Set your Hotmail email address
oSmtp.FromAddr = "liveid#hotmail.com"
' Add recipient email address
oSmtp.AddRecipientEx "support#emailarchitect.net", 0
' Set email subject
oSmtp.Subject = "test email from hotmail account"
' Set email body
oSmtp.BodyText = "this is a test email sent from VB 6.0 project with hotmail"
' Hotmail SMTP server address
oSmtp.ServerAddr = "smtp.live.com"
' Hotmail user authentication should use your
' Hotmail email address as the user name.
oSmtp.UserName = "liveid#hotmail.com"
oSmtp.Password = "yourpassword"
' Set port to 25, if you want to use 587 port, please change 25 to 587
oSmtp.ServerPort = 25
' detect SSL/TLS connection automatically
oSmtp.SSL_init
MsgBox "start to send email ..."
If oSmtp.SendMail() = 0 Then
MsgBox "email was sent successfully!"
Else
MsgBox "failed to send email with the following error:" & oSmtp.GetLastErrDescription()
End If
End Sub
Font: https://www.emailarchitect.net/easendmail/kb/vb.aspx?cat=4
Remember download the library:
http://easendmail-smtp-component-net-edition.soft112.com/
Just Replace Parameters!
I'd like to configure a Pylons app, so that I get email on unhandled exceptions.
So far I can't find the way to pass username and password for SMTP connection.
production.ini file:
..
[DEFAULT]
email_to = my_email#gmail.com
smtp_server = smtp.webfaction.com
error_email_from = info#mydomain.com # this'd be a working email on webfaction
..
Please help.
If you want to access them in pylons.config then you want to put them in the [app:main] section of the configuration.
I've used turbomail, and then you can put them in [DEFAULT]. This is what my config looked like.
[DEFAULT]
mail.on = true
email_to = toaddress#domain.com
mail.manager = immediate
mail.transport = smtp
mail.provider = smtp
mail.smtp.server = smtp.domain.com
mail.smtp.username = username#domain.com
mail.smtp.password = passwordhere
error_email_from = paste#localhost