Too many recipients

[ibm_ioman]

Hello, I am trying to send a newsletter to some emails in our database, but I received an error message back: " Deferred: 452 Too many recipients <<< 452 Too many recipients" from the users on yahoo mail. What I did is to create an alias user in which I specified all the email addresses in our database. What can I do in order for yahoo not to consider me a spammer?

[Jan_Scholten]

In my experiences some mail servers enforce a limit of recipients (in your newsletter i hope you use BCC) See http://www.emailaddressmanager.com/tips/email-address-limit.html (not sure how up-to-date this is) I now that there a custom newsletter scripts taking care of this limits (by spiltting the recipients in different mails) or you use a business specialiszed in sending newsletters.. they take care of bounces (which sholud be removed imedeatly from the recipient lists) have multiple outbound mail serves aso.. how many recipients are we talking about? 10? 100? 2000?

[ibm_ioman]

I created an alias under which I have aprox. 400 e-mails, from which, again, maybe 200 yahoo mail users. I send the e-mail to the alias e-mail. For example, the alias is clients@mycompany.com, and users in this alias are with the real email addresses. I send the email: From: marketing@mycompany.com TO: clients@mycompany.com I use Outlook 2007 for this. Should I put the alias into BCC and populate the TO with a single legitimate email address?

[Jan_Scholten]

i think the problem is that you are sending out 200 yahoo users at once. " Yahoo Mail email send limit – no more than 100 emails or recipients per hour" With the alias: you should be sure that your server is not expanding the adress list in a way that it is visible to the customers OR that the alias is not adressable from the outside. There are few things more embarassing than having a mailinglist which is used by (potential) customers sending out spams or harassments readable by all other customers. (Having the full email adresses of all customers in the TO/CC field, therefore publishing all customers/supplier/subscribers emails is more embarassing..)

[ibm_ioman]

Thank you for the response. You actually opened my eyes: the alias IS addressable from outside, so anyone could send emails to clients@mycompany.com. How can I stop it to be addressable on a FortiMail 100C?

[ibm_ioman]

Ok, I think I solved this issue: I created 2 receiving access control policies, first with bypass the emails from my legitimate mail address to clients@mycompany.com, the second policy to discard any other e-mails (*.*) to clients@mycompany.com. Is this ok? or is there another and more correct way?