Email address verification
This host checks whether email addresses can receive mail. It never sends email.
Seeing connections from 148.113.26.199?
That is this host. It opens an SMTP connection, issues
EHLO, MAIL FROM and
RCPT TO to ask whether an address is accepted, then closes the session with
QUIT. It never issues DATA, so no message is ever transmitted.
Why this exists
Sending mail to addresses that no longer exist produces bounces, which harms deliverability for everyone and wastes your servers' resources. Checking first means fewer dead addresses are ever mailed.
How we try to be a good neighbour
- Low, paced volume
- Checks are spread out deliberately rather than sent in bursts.
- We back off when asked
- A
421,450or any policy response pauses checks to your servers automatically. - Greylisting is respected
- We retry after the delay you specify, from the same IP, with the same recipient — not immediately.
- Aligned identity
- Forward DNS, reverse DNS and the
HELOname all match, and SPF and DMARC are published.
Stop checks for your domain
Email abuse@bestkaam.co.in
Include the domain name (or IP range) you want excluded. We will stop within one business day and
confirm by reply. No justification needed — we will not ask you why.