Am 29.01.21 um 09:09 schrieb Julian Kippels:
Am Fri, 29 Jan 2021 10:39:16 +0530 schrieb "Amol Kale" amol@talentrackershr.com:
Hi,
We are looking for a tool for bulk SMTP testing / Email validation using telnet or similar protocol ( which doesn't send the mails )
It generally involves steps like NSlookup to check MX of destination server, opening port25, telnet to communicate with client server, then finally checking the correctness of user email account.
Please connect if you have such ready tool with you or you can develop
Process example- https://blog.mailtrap.io/verify-email-address-without-sending/ https://blog.mailtrap.io/verify-email-address-without-sending/
Thanks & regards
Amol Kale
Founder Director
Talent Trackers HR
7350002596
Hi,
I would recommend using the Swiss Army Knife for SMTP (swaks) for this. It should be already included in most Linux distributions. Otherwise you can find it here: https://github.com/jetmore/swaks
You can check the whole SMTP-Protocol chain, or you can tell swaks after which step to abort. Your use case would be stopping after RCPT, so you would start it using the extra flag "-q RCPT"
Julian
thats off topic dovecot
but time ago i wrote a blog, including swaks usage
https://blog.sys4.de/recipient-verification-tls-mandatory-modus-en.html
some more info
https://blog.sys4.de/outbound-dane-mit-postfix-de.html
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