Email protection: advanced settings

Question

Hi all,

I use Email Protection in a simple way. This is my SMTP relay only.

However, the sending is done via scripts. The scripts generate a large number of connections, therefore the logs contain messages of saturation of set liits.

2023:06:09-10:33:42 <MY_MTA_NAME> exim-in[22546]: 2023-06-09 10:33:42 rejected MAIL command H=(SRV_NAME) [<SRV_IP>]:49594: too many messages in one connection

To what values can I safely increase the limits?
What is the unit of time for limits, e.g.:
Max mails/connection: 1000
Max rcpt/mail:100

per hour/minute?

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Vivek Jagad · Answer

Hello Konrad Korneluk ,

Thank you for reaching out to the community, Max mails/connection:The maximum messages per SMTP connection requires a number in the range 1-65535.
Max connections/host:The maximum number of concurrent SMTP connections per host requires a number in the range 1-65535.
Note – If the value is 0 the connection number per host is unlimited.
Max rcpt/mail:The maximum number of SMTP recipients per mail requires a number in the range 1-65535.
Max connections:The maximum number of concurrent SMTP connections requires a number in the range 1-65535.
Max message size: The SMTP proxy maximum message size requires a number in the range 1-999.The maximum message size that is accepted by the proxy. This setting applies to both incoming and outgoing emails. If your backend server has a limitation with regard to message sizes, you should set the same or a lower value here. Default is 50 megabytes. The maximum message size limit is 250 megabytes. Unit is max connection per each mail you send.

Thanks & Regards,
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Vivek Jagad | Team Lead, Technical Support, Global Customer Experience