User Tools

Site Tools


linux:centos:email:check-connectivity

Check SMTP server connectivity

Check SMTP SSL/TLS

openssl s_client -connect medjava.ro:465
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

Check SMTP STARTTLS

openssl s_client -connect medjava.ro:587 -starttls smtp
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
...
linux/centos/email/check-connectivity.txt · Last modified: 2019/04/09 18:43 by odefta