"No operator block for your host" error while trying to auth IRC bot - irc

I'm creating an IRC bot, and I want it to auth("login" to the server), with the OPER message.
But when I send it, I receive the "No operator block for your host" error, its error code is 491.
What did I do wrong?

You should check that your hostname/ip address matches that in the O-Line for the IRC server.
Operator permissions are restricted not only by password and username, but also by one or more hostnames.

Related

What's FSL_HELO_FAKE email spam penalty?

I'm using nodemailer with Gmail OAuth authentication to send emails on behalf of my customers.
When running a mail spam test on a mail that is sent from a personal Gmail account, I'm getting a 3.6 penalty on the FSL_HELO_FAKE rule.
Looking anywhere online, I couldn't find a description for this rule.
I'd love to get help understanding this rule and what needs to be done to avoid triggering it for other customers.
I found this article that generally describes it.
https://flylib.com/books/en/3.44.1.28/1/
From what I've gathered, it basically means that you are sending Gmails NOT FROM Gmail.
3.4.2 20_fake_helo_tests.cf
This file defines a set of rules that use the eval test check_for_rdns_helo_mismatch( ) . This test takes two arguments: a regular expression pattern to match against the reverse DNS lookup of the connecting client's IP address, and a regular expression pattern to match against the hostname provided by the client during in the SMTP HELO command. Spammers often use mail programs that forge the HELO hostname, and these tests look for such forgeries when the clients have hostnames that match those of major commercial ISPs. Here's an example of a test from this file:
header FAKE_HELO_AOL eval:check_for_rdns_helo_mismatch("aol\.com","aol\.com") describe FAKE_HELO_AOL Host HELO did not match rDNS: aol.com
This test matches if the client connects from an IP address that reverse-resolves to an aol.com hostname but claims in the HELO to have a hostname that does not match "aol.com". These tests are applied to all of the Received headers from untrusted relays.
You can use this eval test to reject messages that claim, in their HELO, to be from your own host.

I can't connect my email to my email client (VPS - CyberPanel)

i have a server on RackNerd, after I successfully installed Cyberpanel, and my website was online, I created an email on Cyberpanel. Then I connected via my email client (MailBird) but it was always rejected, I have entered the data correctly, such as "Server Hostname", "username" and "password" for my email.. What should I do?
By simply saying it was always rejected doesn't provide enough information to debug your issue. Though you could try these:
Mail server SSL is issued
Postfix & Dovecot is running properly
All mail related ports are open in the firewall

Differences in mailing from different servers

I have a java application installed on unix server using a tomcat instance.
it has a feature which allows to send email to external user and get reply from their Outlook.
The sending and receiving process works well but when trying to reply on their reply from the application i'm getting an error:
There was an error sending a message.
If the problem persists, please contact your system administrator.
Error: No recipient addresses
When sending the first e-mail from the application, the "To" address is:
name.surname#domain.com
But when receiving the reply from the recipient it will turn to:
Surname, Name < name.surname#domain.com >;
From trying it from different server it will work and the only different is that the "To:" address looks like this:
"Surname, Name" < name.surname#domain.com >
Application on both servers using same outgoing/incoming mail servers.
What else can effect it and cause the above error?
Thanks.

Email is bouncing off from few mail providers

when im trying to send email from my domain to polish email providers onet.pl and gazeta.pl im getting bounce back message:
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:
XXX#gazeta.pl
SMTP error from remote mail server after HELO mydomain.com:
host mx.poczta.gazeta.pl [1.1.1.1]: 503 5.7.0 Error:
access denied for unknown[2.2.2.2]
I have configured ptr and mx record. Please help.
There are so many possibilities for the mail denied. Please check :
1) Your mail server IP address should not be blacklisted anywhere. You can check it from http://multirbl.valli.org/lookup/
2) Make sure that the recipient mail server listen on the port which you are using i.e. Port 25. Please check if the port 587 works. You can also try port 465 with TLS.
3) Check if any Antivirus application installed on your side causes the issue.

Server returned error: "No route to host"

An unknown error occurred.
Server returned error: "No route to host"
Anyone who can solve this? i'm using gmail to fetch the email from another mail server. everything's fine till now, 7 march2014 it shown error like:
An unknown error occurred.
Server returned error: "No route to host"
and when i check mail, it shown:
Error fetching mail. Mail from this account has not been retrieved since Mar 7. View details
"No route to host" most likely means problems with internet connectivity (link down).
Can you connect the host from your computer to double check it?
Less likely options include e.g. firewalling out google to stop it fetching users' email.