While setting-up smtp server using smtplib on Python, you get the option to specify hostname and port. But those correspond to the remote host I am sending mail to. And there are other similar questions for this.
I want to change the underlying port, that smtplib will use to send the mail.
I want to change it from 25 to something else as the Google Cloud Platform instance I am using has blocked 25.
Please don't suggest using third party services like sendgrid.
And also I didn't find these answers useful
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so i have an email address like: example#unknowndomain.com
i want to check what is the smtp host that this email is connected to
is there any way i can do this in python?
at the end i want to check if smtp host of the email matches a certain host i have like:
email = example#unknowndomain.com
smtp_host = smtp.smtphost.com
email_smtp_host =smtp.emailsmtphost.com
if email_smtp_host == smtp_host:
True
else:
False
i tried looking through the smtplib but couldn't find anything useful
This is not something you can simply get by code. The SMTP server is the outgoing mail server and this depends on the email provider. There is no standard in this, and these are not exposed like the MX records for incoming email.
You might be able to find a list of SMTP servers such as this one but you would still need to know who the email provider is. You might be able to figure this out by looking at the MX records for the domain, and then choose the SMTP server based on that.
Example:
Needs installation of the non-default dnspython module using pip install dnspython
import dns.resolver
domain = 'gmail.com'
for x in dns.resolver.resolve(domain, 'MX'):
print(x.to_text())
This should print out the MX records for the domain gmail.com, which you would then have to check against some database containing the SMTP servers for all the email providers (linked to their MX records)
As I stated, this is not something that can be done easily and would require quite a bit of groundwork/legwork...
I am using the following script to get issues from Jira.
from jira import JIRA
options = {'server': 'https://it.company.com/'}
jira = JIRA(options, basic_auth=('user', 'password'), max_retries=1)
issues = jira.search_issues('project="Web"', startAt=0, maxResults=50)
I want to replace https://it.company.com/ with https://ip:port.
I usedping to get the IP.
I used nmap for checking ports, but no matter what https://ip:port input I use, I can't get a connection. I also tried these ports.
How can I find out which IP and Port is JIRA() accessing?
The https protocol uses port 443. Refer to wikipedia for details.
However accessing a server via https://server_name/ is different from accessing a server via https://server_ip_address/. This is because during TLS negotiation, server_name is passed to the server via TLS SNI (Server Name Indication). This way multiple virtual websites may be hosted at the same server_ip_address. See wikipedia for details.
If the script works and you just want to know how the connection looks, I recommend letting it run and in the background execute netstat -ano.
If the script doesn't work and you just want to know where it tries to connect, I recommend installing wireshark.
Edit: In any case you (most likely) won't be able to replace it with ip:port because servers treat HTTP requests to an IP different than how they treat requests to a name.
Ask the Jira admin to tell you. Configured in conf/server.xml like any Tomcat app, or there may be a remote proxy such as nginx configured in front of the Jira
I'm going to transfer crash dumps from clients to me through the mail mechanism. Therefore, I can't use any public SMTP servers, as packing any account's credentials with the application is unacceptable.
Therefore, I need to send mails through my application directly to the destination mail server.
How can I achieve this in python? (I'm using windows so sendmail is not an option)
Just use smtplib in the standard library.
Trying to write code that can send mail to anyone is problematic, because smtplib connects to servers client-to-server style rather than server-to-server-relay style.
But if you only need to send mail to one particular server, which you control, it's trivial. Just configure your server at 'mail.example.com' to accept any mail from 'crash-reports#example.com' to 'crash-reports#example.com'.
Your code will look something like this:
import smtplib
addr = 'crash-reports#example.com'
def send_crash_report(crash_report):
msg = ('From: {}\r\nTo: {}\r\n\r\n{}'.format(
addr, addr, crash_report)
server = smtplib.SMTP('mail.example.com')
server.sendmail(addr, [addr], msg)
server.quit()
As a side note, if you're just starting on a crash report collector, you may want to consider using a web service instead of a mail address. You're going to run into problems with people who can't access port 25 through their corporate firewall/proxy, write code that extracts the crash reports from an inbox (and/or searches via IMAP or mbox or whatever), deal with spammers who somehow find crash-reports#example.com and flood it with 900 messages about Cialis for each actual crash report, etc.
i'm trying to connect my local XMPP server by the code coming below
import xmpp
client = xmpp.Client('localhost',debug=[])
client.connect(server=('localhost',5222))
but i always get this message :
An error occurred while looking up _xmpp-client._tcp.localhost
i've checked that the port 5222 is already opened(by using telnet).
(i have to mention that the firewall on the localhost is off)
now what should i add to this code to make it work ?
This message (a warning, not an error as pointed out in xinox's answer) is indicating that a DNS SRV record lookup failed. DNS SRV records are used to find services that are associated with a certain domain (eg. localhost in this case, so not really a domain at all which is why the lookup is failing), but which delegate their responsibility to a server living somewhere else.
For instance, if I have a server at example.net, making my Jabber ID (JID): user#example.net, but my XMPP server lived at chat.example.net I could construct an SRV record on example.net to point to chat.example.net. There are other ways to delegate responsibility, but this is the preferred one. XMPPs use of SRV records is defined in RFC 6120 ยง3.2.1.
To actually get rid of this error you can use the use_srv kwarg, making your initial example:
import xmpp
client = xmpp.Client('localhost',debug=[])
client.connect(server=('localhost',5222), use_srv=False)
use this.
client = xmpp.Client('127.0.0.1',debug=[])
client.connect(server=('127.0.0.1',5222))
or your IP 192.X.X.X
I've checked so many articles, but can't find one for server to server email receiving. I want to write a program or some code just acts as an email receiver, not SMTP server or something else.
Let's suppose I have a domain named example.com, and a gmail user user#gmail.com sends me an email to admin#example.com, or a yahoo user user#yahoo.com sends me an email to test#example.com. Now, what do I do to receive this email? I prefer to write this code in Python or Perl.
Regards,
David
http://docs.python.org/library/smtpd.html
http://www.doughellmann.com/PyMOTW/smtpd/
In Perl:
Net::SMTP libraries (including Net::SMTP::Server).
Here's an example of using it: http://wiki.nil.com/Simple_SMTP_server_in_PERL
"reveive" is not a word. I'm really not sure if you mean "receive" or "retrieve".
If you mean "receive" then you probably do want an SMTP server, despite your claim. An SMTP server running on a computer is responsible for listening for network requests from other SMTP servers that wish to deliver mail to that computer.
The SMTP server then, typically, deposits the mail in a directory where it can be read by the recipient. They can usually be configured (often in combination with tools such as Procmail) to do stuff to incoming email (such as pass it to a program for manipulation along the way, this allows you to avoid having to write a full blown SMTP server in order to capture some emails).
If, on the other hand, you mean "retrieve", then you are probably looking to find a library that will let your program act as an IMAP or POP client. These protocols are used to allow remote access to a mailbox.
Good article at http://muffinresearch.co.uk/archives/2010/10/15/fake-smtp-server-with-python/ showing how to subclass smtpd.SMTPserver and how to run it.