Is it a requirement to support verify of email senders?

[aarondwyer]

Hi

I have setup on one of my cPanel servers to "Verify the existence of email senders".

This has resulted in the reduction of a heap of spam, but some other servers don't support this checking of email addresses.

I have had to setup a whitelist in Exim with those domains that contact me letting me know that they can't send emails to my server.

Is there a requirement or common practice to have servers enabled to allow verification. ?

More importantly I need to know how do you enable or disable the cPanel server to respond to the verifying of email addresses.?

Thanks
Aaron

 

[MMarko]

Check Exim configuration. There is option to disable this.

 

[jayh38]

Verify senders is for your local server to verify clients exist and are authorized to send mail. Are you allowing other servers to relay through you as a mx service?

 

[aarondwyer]

Thanks for that, but I think I mentioned the wrong option.

This sort of thing is showing up in my exim_mainlog from a valid external email isn't getting through to a valid local email box.

2007-02-25 20:40:29 H=(marvin.ipnetworks.net.au) [203.132.64.12] F=<[email protected]
lagunacom.com.au> temporarily rejected RCPT <[email protected]>: Could
not complete sender verify callout

Since I have this ticked on my servers.

Use callouts to verify the existence of email senders.

And some servers do not comply with allow you to verify if it's a real email address. I thought this was a standard.??

Also how do I enable / disable whether the server accepts these callouts.

I know my server is asking for them, but I don't think it is giving them out to other servers.

Thanks
Aaron