# SMTP Auth passthru

**URL:** <https://www.ruby-forum.com/t/smtp-auth-passthru/187501>\
**Category:** NGINX\
**Created:** [April 24, 2010, 4:05am UTC](https://www.ruby-forum.com/t/smtp-auth-passthru/187501 "2010-04-24T04:05:14Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Alan\_Batie](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c37758/32.png) [@Alan\_Batie](https://www.ruby-forum.com/u/Alan_Batie)\
**Post date:** [April 24, 2010, 4:05am UTC](https://www.ruby-forum.com/t/smtp-auth-passthru/187501/1 "2010-04-24T04:05:14Z")

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I just had our prototype mailproxy turned into an open relay because  
nginx doesn’t pass through smtp auth, requiring me to tell the real  
mailserver to trust it. This could substantially complicate and slow  
down the authentication script for nginx, though I’ll investigate  
xclient. smtp auth pass through would be much cleaner…