Email Validator FAQ-3

Your Email Validator doesn't connect to the port 80 but only to the port SMTP 25. Is it normal?

Yes. SMTP required connection on port 25 and it is normal.

When I am using Email Validator sometimes the SMTP validation crashes and have to be catched by a try-catch block. For example emails ending on @vux.dk and @2q.dk will make the application crash. What is the reason for this? And can it be solved?

Some server implements protection mechanism against query and sending test data. These servers allow establishing connection but terminates when trying to send data. You can modify code to handle this exception. This is up to you to catch any other exception that you think may throw during validation.

I am using your Email Validator but have now found that it validates emails as incorrect if there is less than 3 letters before @. It says: "Syntax is not correct."

This is configurable. You can change this by setting property. You can fix to any number of character by default it is 3. Property name is EmailSyntaxPattern Please set new regular expression as wish.

Does your Email Validator component require SMTP server to relay through?

Yes, Email Validator Component requires SMTP server to relay through.

I am running Email Validator locally and am having a problem validating e-mail addresses. When I start the project, I can validate the default (contact@neevsoftware.com) email address fine, but when I input any other e-mail address, it returns one of the two below errors. Value cannot be null. Parameter name: input “An existing connection was forcibly closed by the remote host”

It looks SMTP server you are trying is not allowing to connect. You can try changing SMTP server name, from email address in Email Validator properties. There could be one or more reason for this error. 1) SMTP server not available.
2) SMTP do not allow MX Queries
3) SMTP server and From Email address is invalid
4) Antivirus and Anti spam software blocking such network query.

I am evaluating your Email Validator and tried changing the SMTP properties and e-mail address and I am able to validate your e-mail addresses from your domain, but I am getting the error when I try to validate others (from GMAIL, AOL, COMCAST).

There could be couple of reasons. It may possible that SMTP or email address you are using is rejected by some of the email server you are querying. You can try changing SMTP as well as DNS server property to make sure every setting belong to your environment. In other case you can use demo parameters if works for you.

I am able to validate email addresses using your demo though, my question is, do we need to use a local SMTP for this to function correctly?

Difference between online demo and your environment are
1) Online demo uses correct SMTP detail from where it is querying. E.g. all setting belongs to Neev Software. In your case it is might be same but could be behind the Firewall.
2) No Proxy server setting which can block the connection to outside world.
3) Antivirus is disabled for MX query on online demo.

When I am testing on yahoo accounts Email Validator hangs, but if I then re-run it works ok. Is there a timeout for the functions?

Demo version uses Neev Software's mail server and DNS server. Please change mail server and DNS properties as per you network settings.

What implications do the use of your component has on the server that hosts the Email Validator control? Such as, blacklisting the servers IP?

Demo version uses Neevsoftware's mail server and DNS server. Please change mail server and DNS properties as per you network settings.

How does your Email Validator component handle under the pressure of checking an email list which contains approximately 50,000 records?

Demo version uses Neevsoftware's mail server and DNS server. Please change mail server and DNS properties as per you network settings.

Do you have question that is not here? Please Request Support.