503 error sending (it's not email client, it is whm server side).

David Gawler

• March 01, 2022 20:43

Your message did not reach some or all of the intended recipients. Subject: testing Sent: 2/03/2022 12:39 PM The following recipient(s) cannot be reached: 'randomuser@outlook.com' on 2/03/2022 12:39 PM 503 Valid RCPT command must precede DATA this is not an outlook issue. it is whm server issue with Open SSL. "openssl_options = +no_sslv2 +no_sslv3 +no_tlsv1 +no_tlsv1_1". I dont understand this error as it was all working one day then suddenly it stops. RECEIVING WORKS BUT SSL SENDING OUTBOUD SECURELY DOES NOT. 4.18.0-305.25.1.el8_4.x86_64 #1 SMP Tue Nov 2 10:34:25 EDT 2021 x86_64 x86_64 x86_64 GNU/Linux Anyone?

• 

  cPRex Jurassic Moderator

  • March 02, 2022 13:19

  Hey there! That particular error is almost always a problem with SMTP authentication not being enabled on the mail client side. We have some more details in this older thread here, but the information would still apply:

  0
• 

  David Gawler

  • March 02, 2022 22:09

  Thank you for your reply but it has nothing to do with email client. Outlook it is not the reason causing this error. It is cPanel / WHM configuration for some reason. My hosting provider for my dedicated server and rebuilt it but still mail is not working!!!!!!!!!!!!!!!!!!

  0
• 

  Spirogg

  • March 03, 2022 02:23

  Can you also let me know where you are seeing the OpenSSL settings you posted?

  
  this is in exim configuratuon manager > under security tweak settings options for openSSL :)

  0
• 

  Spirogg

  • March 03, 2022 02:27

  Thank you for your reply but it has nothing to do with email client. Outlook it is not the reason causing this error. It is cPanel / WHM configuration for some reason. My hosting provider for my dedicated server and rebuilt it but still mail is not working!!!!!!!!!!!!!!!!!!

  
  I have those same setting in exim configuratuon manager > under security tweak settings options for openSSL Options for OpenSSL [?] This option is used for configuring SSL and TLS protocols in OpenSSL. +no_sslv2 +no_sslv3 +no_tlsv1 +no_tlsv1_1 no issues on my end sending emails

  0
• 

  cPRex Jurassic Moderator

  • March 03, 2022 12:44

  @David Gawler - what do you see in either /var/log/exim_mainlog or /var/log/maillog during the time when you try and send a message? One of those areas should give you more details if it is indeed a server-side issue.

  0

Please sign in to leave a comment.