Email blocksize and step

[cedric]

Hi

Is it possible to change the default value of the email blocksize (1000) and step (0)?

[maschoff]

Yes. Make sure to enable the permission for this feature and you will see two new fields for these values if you want so send a mailing.

[cyberozz]

Hello!

Trying to send 1000 mails.
When i set blocksize 100 and stepping 10 min it didnt work.
Can you explain me how it works?

Thank you.

[maschoff]

Just tried it with blocksize 1 and stepping 5 and a mailing list with my own email addresses: I got one mail every 5 minutes.

[cyberozz]

do i need to tune my os or sendmail?
i have CentOS 6 and Sendmail 8.14

[maschoff]

No, comes out of the box.

[cyberozz]

ive made next test:
add new 100 recipients and start mailing with 1 mail and 5 min.
Weird results - 49 mails sent in one min and now it sent 1 mail per 5 min.

I think it may be cause 70% of recipients sitting in same mailhosts like gmail.com, live.com, etc.
it happens cause sendmail can send many mails in one connection. how can i limit to send one-host mails?

update:

second test
870 new recipients. Sent with 50 mails and 30 min
result: 870 mail sent in one minute