Issues with php autoresponders not sending randomly but debugs ok

[kheatley]

We have set up a nominator email form that uses php file to send email to submitter with data they entered, sends email to us with data, and saves data entered to csv file, but sometimes the send_email sections do not work/send email though the data is saved to the csv file. It works for some users and doesn't work for others. Not sure if it's because there's times when something is happening on the web_scripts server that is halting the scripts from working because more times than not it does work, but when it doesn't it's very problematic and keeps us from validating these nominations.

Here are links/steps of nomination process:

Main form: ​http://web.mit.edu/physics/research/pappalardo/form.html (form them calls on ​https://physics.scripts.mit.edu/pappalardoform.php)

Nominator receives email with data to review. (intermittently doesn't work) Pappalardo administrator and myself receives submission email with data. (intermittently doesn't work) Submission data is saved to csv file. (works)

In the nominator email is validation link (ex: ​https://physics.scripts.mit.edu/verify_nomination.php?var1=kimeeestar@gmail.com&var2=Kimeee&var3=Heatley&var4=Kimeee&var5=Heatley). This php sends email again but just to administrator and myself validating nomination. (intermittently doesn't work)

So again, not sure why these scripts work for multiple submitters but other times doesn't. Doesn't seem to be issue with browser or OS or any other way.

Please help ASAP

[kheatley]

second script to verify nomination