I'm interesting to host my website portal at home, I've got public ip from my isp, got good server, installed cent os, installed cpanel, copied website but seems that email server not working good.
When testing to multiple receivers, few mails are delivered ok but few message are not delivering, example of errors:
error1:
SMTP error from remote mail server after initial connection: 554 n1plibsmtp01-02.prod.ams1.secureserver.net bizsmtp IB106. Connection refused. MYIP is listed on the Policy Block List (PBL).\302\240
error2:
ECDHE-RSA-AES256-SHA384:256 CV=yes: SMTP error from remote mail server after MAIL FROM:MYEMAIL SIZE=1669: 550 DY-001 (COL004-MC2F3) Unfortunately, messages from MYIP weren't sent. Please contact your Internet serv
error3:
ECDHE-RSA-AES256-SHA384:256 CV=yes: SMTP error from remote mail server after MAIL FROM:MYEMAIL SIZE=1669: 550 DY-001 (BLU004-MC1F26) Unfortunately, messages from 213.163.119.60 weren't sent. Please contact your Internet ser
Delivered emails have this message:
Accepted
So since few emails are delivered and few emails are not delivered, seems blocked by hotmail, gmail, yahooo, or marked as spam.. means that problem is to my ISP?
Services like Gmail, Outlook.com and Yahoo! Mail block email to protect from unwanted or malicious email such as phishing, scams and spam. In this case, they are mistaking email that you are sending.
There is something like "whitelisting domain" but I am not too sure on that. I think that can help ??
Related
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.
I'm trying to send an email to a client, with an address #comcast.com
Within 4 seconds I get an email in my Inbox saying the message failed delivery.
A coworker sitting 10 feet away from me can send emails to this address successfully. We are on the same domain and network.
Delivery has failed to these recipients or groups:
xxxxx-xxxx#comcast.com (yes, the name has a hyphen in it)
A problem occurred while delivering this message to this email address. Try sending this message again. If the problem continues, please contact your helpdesk.
The following organization rejected your message: ESMTP.
xxxxx-xxxx#comcast.com
ESMTP
Remote Server returned '<ESMTP #5.0.0 smtp;550 Mailbox unavailable or access denied - <xxxxx-xxxxx#comcast.com>>'
If any further information is needed please let me know.
Does this seem like a problem at the clients end or on our side?
Any ideas as to the cause? I don't see any detail about my access was denied... no space, spam, blacklist, etc.?
Do the SMTP logs on a server (Windows 2003) only show logs of mail that were sent successfully?
We are getting bounce backs when sending mail to a particular domain:
The connection was dropped by the remote host.
It looks like a problem on the receiving server, but we dont have much information to provide them. We can send to hotmail, gmail, yahoo etc OK.
Any ideas?
Most likely, there is a spam filter in front of the receiving mail server for this domain, and this spam filter thinks your mail server is sending spam, so it's closing the connection from your mail server. One way to test this is to simulate sending a message to this mail server by opening a command prompt on your mail server, and use telnet to connect to the receiving mail server on port 25, and proceed with the process of sending a message just as a mail server would. This way, you'll be able to see how the receiving mail server responds after each step. Follow the instructions in http://support.microsoft.com/kb/153119 to see how this is done.
It turned out the sending server was blacklisted by McAfee, that was running on the receiving servers firewall.
For those that may have the problem in the future you can check if your server is blacklisted with McAfee here:
http://www.mcafee.com/threat-intelligence/ip/spam-senders.aspx
After entering your server IP, you should see a link Threat Feedback. Use this to email McAfee.
I was able to send McAfee an email with an explanation, they then removed our server from the blacklist.
I would like like guidance regarding an issue we are having on our CentOS server.
Just recently we noticed that we cannot send emails to Hotmail.com mailboxes from our domain email. I also discovered that we're getting a lot of mail delivery failure emails in one of the inbox's that we don't use.
I've checked the mail logs and saw some suspicious activity. Unfortunately, I don't know much with regards to mail server and how they behave. Can someone shine some light on this situation and tell me if some is connecting to our SMTP server remotely and sending spam emails to various recipients? What other steps should I take to prevent this?
Here is part of the log:
2013-06-09 05:43:27 SMTP connection from [110.52.1.237]:13088 (TCP/IP connection count = 1)
2013-06-09 05:43:32 no host name found for IP address 110.52.1.237
2013-06-09 05:43:41 SMTP connection from [110.52.1.237]:13461 (TCP/IP connection count = 2)
2013-06-09 05:43:46 no host name found for IP address 110.52.1.237
2013-06-09 05:43:46 unexpected disconnection while reading SMTP command from (iem.net) [110.52.1.237]:13088
2013-06-09 05:43:55 H=(qbnngj.com) [110.52.1.237]:13461 sender verify fail for <wqnsjzyyc#qbnngj.com>: The mail server could not deliver mail to wqnsjzyyc#qbnngj.com. The account or domain may not exist, they may be blacklisted, or missing the proper dns entries.
2013-06-09 05:43:55 H=(qbnngj.com) [110.52.1.237]:13461 F=<wqnsjzyyc#qbnngj.com> rejected RCPT <support#greenXXXX.com>: Sender verify failed
2013-06-09 05:43:55 unexpected disconnection while reading SMTP command from (qbnngj.com) [110.52.1.237]:13461
As you can see above, the IP that connected to the SMTP server is from China. I have a dozen of similar connections made in the log.
I am not sure how to resolve this issue.
Any help would be appreciated.
Thank you,
Max
You have two separate problems.
Sending to Hotmail: They have a web page regarding their own private white list, and if you're not on the list, you get blocked.
Receiving delivery status notices for messages not sent: Someone is spoofing your domain in messages they're sending to others. You need to protect your domain with some authentication technology. The two most common are called "sender policy framework" and domainkeys.
I have two websites, we'll call them a.com and b.com. I already have a mail server running on b.com. What I would like to do is have any email sent to #a.com to be automatically forwarded to b.com. I edited the only MX record in the a.com DNS settings to be...
Priority: 10
Host: #
Points To: b.com
After setting this up and giving it time to propagate, mail sent to a.com does not go through and I get a "Message not delivered" response from my email client.
Thanks for any help!
The MX-Record does only tell the webserver where to deliver mail for that specific domain. So any mail sent to user#a.com will be sent to the mailserver at b.com, that does not mean that they get forwarded to user#b.com. You will have to configure your mailserver at b.com to accept mails for the a.com domain.