#1 2018-04-22 14:41:23

clicream
Member
Registered: 2018-04-19
Posts: 27

Improper use of SMTP command pipelining

Hi,

Script manages to run backup but failed sending email. Below are errors related:

2018-04-22T14:29:54|  Opening port 25 for SMTPout-25 service...

220 mta2.domain.com ESMTP Postfix
250 mta2.domain.com
250-mta2.domain.com
250-PIPELINING
250-SIZE 204800000
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
334 VXNlcm5hbWU6
334 UGFzc3dvcmQ6
235 2.7.0 Authentication successful
250 2.1.0 Ok
250 2.1.5 Ok
503 5.5.0 <DATA>: Data command rejected: Improper use of SMTP command pipelining
221 2.7.0 Error: I can break rules, too. Goodbye.
Firewall rule SMTPout-25 closed.

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#2 2018-04-23 06:17:55

admin
Administrator
Registered: 2017-04-21
Posts: 1,386

Re: Improper use of SMTP command pipelining

Your server does not seem to support PIPELINING, just try with another server that does, a GMail account per instance

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