Rate Limit & Helo

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daanse
Posts: 1
Joined: Tue Sep 27, 2016 6:11 am

Rate Limit & Helo

Post by daanse » Tue Sep 27, 2016 6:16 am

Hi,

whats wrong if your Tools shows 10.000 Outgoing / something Mails ?
i have nearly 5000 Emails Rate Limit on that day?
Also my customers can only send 100 Emails per Hour. So i dont understand this high Values?

Second thing:
What is wrong, it the "Spam no valid Helo" shows up the Computer name of the Client?
System:
Plesk 12.5 / Debian 8.x

magicspam
Posts: 1014
Joined: Tue Oct 28, 2008 2:27 pm

Re: Rate Limit & Helo

Post by magicspam » Tue Sep 27, 2016 11:40 am

Hello daanse,

Thank you for your post.

Would you be able to clarify your first question for us as we did not fully understand it. In the meantime, below are some additional information for you about the Rate Limiter functionality.

The Rate Limiter system in MagicSpam is for limiting the number of recipients a mail server or a user can send to in a 5 minute window. The default number of recipients allowed in a 5-minute period is 150. This is defined in the MagicSpam setting in

Settings / System / Options

Every invalid recipient, as well as a 'SPAM HIT' adds additional 15 points to this Rate Limiter score and it can influence how a user gets rate limited.

The "Inbound" rate-limiter is for restricting remote mail servers sending to/through your mail server.

The "Outbound" rate-limiter (Available for MagicSpam PRO only) is for restricting your users sending with SMTP Authentication through your mail server. If your users do not use SMTP authentication when sending through your server, their sending
connections are treated as from remote mail servers, and this would be considered for the Inbound rate-limiter.

You can add a remote server's IP address or a user's email address to the Rate-Limiter exemption list so that they can send unlimited emails to/through your mail server by visiting the MagicSpam settings at:

Settings / Exemptions /
Per-IP Rate Limiter Whitelist (for Inbound)
Per-User Rate Limiter Whitelist (for Outbound)

As for your second question, why is wrong if the HELO shows up the Computer name of the Client, MagicSpam policies:

Server Identification should be sane (FQDN HELO)
Confirm Server Identification Resolves (HELO)

are relying on HELO being a FQDN which will help determine if the sender is valid and configured as per best practices for email servers. The reason behind it is, probably, because sending party email client is not set up correctly. In order to fix this issue, the sending party should change settings for their client and make sure that they are using SMTP authentication, which can be done in their email/account settings, (e.g. in Outlook or Thunderbird). Spammers sometimes use compromised home computers to send spam and these best policy rules are there to protect you from these kind of attacks.

You can find more information about these best practices in the links below:

http://spamauditor.org/best-practices/v ... dentifier/
http://spamauditor.org/best-practices/r ... dentifier/

Please let us know if you have any questions.
-- MagicSpam Support Team --

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