sending email problem
 

Hi!
I have a amails list wich I send a mailling to every 24hours.
That list is growing veryfast and the time to send out to all emails soon will take more than 24hours wich could make a cycle that crash the server (the mailling queue will start doubling everyday because it would start sending new emails before finish the old ones).

So what is the solution? Get a new server to send the emails? Make a better proggy? :)

I am using perl with sendmail...perhaps I should write a program all in C without the use of sendmail, would it work?

I would appreciate any help you could give me!
Thank you!

How big is the list? There are some programs out there , some better and more expensive than others... I guess it depends on the size of the mail list.

We code all of our programs. The list is about a few hundred thousands emails.

You can probably improve the program you have quite a bit.

1. Run a caching dns server on the same machine as the script.

2. Put the mqueue directory on a ram disk.

3. Sendmail creates the queue files in the current directory and then moves them into the queue directory. Either start your script from ram disk or have it cwd in.

4. Use envelopes so that you can deliver several messages to the same host with only one connection.

5. Tweak your sendmail timeout parameters so that it wastes less time on hosts that are slow or unreachable.