Mailer error. SMTP code: 450, response: 4.7.1 Error: too many recipients

davide

Hi All,here are the basic information,osTicket Versionv1.10.1 (9ae093d) — Up to dateWeb Server SoftwareApacheMySQL Version5.7.14PHP Version5.6.22In the last month, I have received the following error repeatedly, "Mailer ErrorUnable to email via SMTP:<server> Failed to add recipient: <receiver's email address> "

The words between <> are used just to hide real email addresses and IPs.

It happens almost daily, even though not every time that I send an email. Do you have any suggestion about how to troubleshoot it and what may be the cause?

Thank you in advance! (and let me know if you need more info)

ntozier

So you said "The words between <> are used just to hide real email addresses and IPs. "How many recipients are we talking about?Your mail server is telling you that the email being sent has too many recipients. That means your mail server is limiting the number to a certain amount and the email exceeds that amount.

davide

Hi ntozier, thank you for your comment. I should have written that the recipients are actually only 1 or 2 in the worst case scenario.The traffic that OSTicket cause on the mail server is probably in the order of 20-25 emails per day (35 in a really bad day).

ntozier

Then i dont know why your mail server would tell you that is too many recipients.

davide

Thank you all the same ntozier. I will try to insist with the company that gives us the smtp service and see what they say. However, if anyone has any other suggestion, I am open.