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linux:centos:email:check-connectivity
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Last revision
linux:centos:email:check-connectivity [2019/04/09 18:43] – created odefta
Line 1: Line 1:
 +====== Check SMTP server connectivity  ======
 +
 +===== Check SMTP SSL/TLS =====
 +
 +  openssl s_client -connect medjava.ro:465
 +
 +<code>
 +CONNECTED(0000013C)
 +---
 +Certificate chain
 + 0 s:OU = Domain Control Validated, OU = Globe Standard SSL, CN = medjava.ro
 +   i:C = GB, ST = Greater Manchester, L = Salford, O = COMODO CA Limited, CN = COMODO RSA Domain Validation Secure Server CA
 + 1 s:C = GB, ST = Greater Manchester, L = Salford, O = COMODO CA Limited, CN = COMODO RSA Domain Validation Secure Server CA
 +   i:C = GB, ST = Greater Manchester, L = Salford, O = COMODO CA Limited, CN = COMODO RSA Certification Authority
 + 2 s:C = GB, ST = Greater Manchester, L = Salford, O = COMODO CA Limited, CN = COMODO RSA Certification Authority
 +   i:C = SE, O = AddTrust AB, OU = AddTrust External TTP Network, CN = AddTrust External CA Root
 +---
 +Server certificate
 +-----BEGIN CERTIFICATE-----
 +MIIGUTCCBTmgAwIBAgIQcWa4ozN875XturRmQfOj3DANBgkqhkiG9w0BAQsFADCB
 +kDELMAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4G
 +A1UEBxMHU2FsZm9yZDEaMBgGA1UEChMRQ09NT0RPIENBIExpbWl0ZWQxNjA0BgNV
 +</code>
 +
 +===== Check SMTP STARTTLS =====
 +
 +  openssl s_client -connect medjava.ro:587 -starttls smtp
 +  
 +<code>
 +CONNECTED(00000134)
 +---
 +Certificate chain
 + 0 s:OU = Domain Control Validated, OU = Globe Standard SSL, CN = medjava.ro
 +   i:C = GB, ST = Greater Manchester, L = Salford, O = COMODO CA Limited, CN = COMODO RSA Domain Validation Secure Server CA
 + 1 s:C = GB, ST = Greater Manchester, L = Salford, O = COMODO CA Limited, CN = COMODO RSA Domain Validation Secure Server CA
 +   i:C = GB, ST = Greater Manchester, L = Salford, O = COMODO CA Limited, CN = COMODO RSA Certification Authority
 + 2 s:C = GB, ST = Greater Manchester, L = Salford, O = COMODO CA Limited, CN = COMODO RSA Certification Authority
 +   i:C = SE, O = AddTrust AB, OU = AddTrust External TTP Network, CN = AddTrust External CA Root
 +---
 +Server certificate
 +-----BEGIN CERTIFICATE-----
 +MIIGUTCCBTmgAwIBAgIQcWa4ozN875XturRmQfOj3DANBgkqhkiG9w0BAQsFADCB
 +kDELMAkGA1UEBhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4G
 +A1UEBxMHU2FsZm9yZDEaMBgGA1UEChMRQ09NT0RPIENBIExpbWl0ZWQxNjA0BgNV
 +BAMTLUNPTU9ETyBSU0EgRG9tYWluIFZhbGlkYXRpb24gU2VjdXJlIFNlcnZlciBD
 +...
 +</code>
  
linux/centos/email/check-connectivity.txt · Last modified: 2023/07/04 19:36 by 127.0.0.1