If there are certain email addresses that you are not able to send email to, or a particular domain is rejecting mail, it is most likely not a problem with your mail server (provided by VCG). It is most likely a problem with your ISP's configuration of mail, or a block at the email recipients mail server. We recommend that you contact your ISP to find out if mail is being blocked from SMTP Port 25. If it is, change your SMTP Port by following instructions found in one of two User Guide articles (depending on your choice of email software): How to enable SMTP in Outlook or How to enable SMTP in Windows Mail, Eudora, Mail for OSX, Thunderbird, Outlook Express for Mac.
The first test would be to determine if you are able to send the mail through your webmail account. If you are, then the problem isn't likely VCG's mail server. If you aren't, that still doesn't indicate that it's a problem with VCG's mail server. A good test is to make sure that you can send to other email addresses, and that this issue is isolated to a particular email address.
Here are some tips to help troubleshoot this issue:
The first thing to do is to ask the recipient that you are trying to send email to if they would contact their mail provider and ask why the email is being rejected. This is the most common solution to this annoying problem.
If the message is "None of your e-mail accounts could send to this recipient", and if you are running Outlook as your email client, please ensure that Outlook is completely up to date with the latest patches. Microsoft Technet forum has a lot of information relating to this issue. Here is a thread from that forum that provides some interesting reading: http://social.technet.microsoft.com/Forums/en-US/exchangesvrclients/thread/ebb37de3-2668-4e39-a419-7c78b10dbcf4
You can also perform a ping and telnet test.
- Open Command Prompt
- At command line, type ping mail.domain.com
- You should receive a successful response
- Open Command Prompt
- At command line, type telnet mail.domain.com 25 (mail.domain.com is the host name found in the MX record e.g. mail.domain.com) (if telnet is an unrecognized command see the bottom of this KB for instructions on how to enable telnet).
- If the mailhost is available you should get a response similar to “220 mydomain.com” followed by some text that identifies the email server software. It is also possible that you get a simpler response designed not to give away any information to potential hackers.
- If the connection fails you may want to take some additional troubleshooting steps like verifying that the mailhost resolves to an IP address (Ping test)
- Once you get a response you need to say hello by typing helo.
- The receiving server should respond with “250 mydomain.com yourIPaddress” or something similar.
- Now you have to simulate sending a message from your domain. To do this first type mail from: clientemailaddress.
- You should see a response similar to “250 Sender OK”. If you get a rejection it will hopefully give you some additional information to identify why.
- Now enter the destination email address by typing rcpt to:destinationemailaddress.
- You should get a response like “250 destinationemailaddress” although this is often the point where you’ll get an “unable to relay” message if there’s a configuration issue or if you are genuinely trying to relay a message through a closed server.
- Next we need to enter the subject and body text, so type the command data which should respond with something like “354 Start mail input; end with.”
- To add a subject you need to type Subject: my_subject_text followed by a carriage return.
- You can then type the body text. When you are finished start a new line type a full stop (a period) then hit return.
- You’ll see something like “250 message queued for delivery”. If you see this, then their mail server accepted the mail.
By default, Telnet is not installed with Windows, but you can install it by following the steps below.
To install Telnet Client
Click the Start button , click Control Panel, click Programs, and then click Turn Windows features on or off. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
In the Windows Features dialog box, select the Telnet Client check box.
Click OK. The installation might take several minutes.