Can't connect my SMTP to Growmeorganic tool

Hi I have this problem when trying to connect my SMTP to Growmeorganic tool
I got this error message : SMTP → ERROR: Failed to connect to server: (0)

ERROR1912×200 62.8 KB

I can connect with the same information to other tools like Snov.io without a problem

this is the result of chechtls :

Screenshot_2023-02-17-16-22-42-781080×3850 202 KB

when I click connect on Growmeorganic using port 465 SSL, I got these lines on postfix log activity :
Feb 17 14:34:14 mail.ayyoubaissaoui.com postfix/smtps/smtpd[146143]: connect from ns101305.ip-147-135-6.us[147.135.6.154]
Feb 17 14:34:14 mail.ayyoubaissaoui.com postfix/smtps/smtpd[146143]: SSL_accept error from ns101305.ip-147-135-6.us[147.135.6.154]: -1
Feb 17 14:34:14 mail.ayyoubaissaoui.com postfix/smtps/smtpd[146143]: warning: TLS library problem: error:14094415:SSL routines:ssl3_read_bytes:sslv3 alert certificate expired:…/ssl/record/rec_layer_s3.c:1543:SSL alert number 45:
Feb 17 14:34:14 mail.ayyoubaissaoui.com postfix/smtps/smtpd[146143]: lost connection after CONNECT from ns101305.ip-147-135-6.us[147.135.6.154]
Feb 17 14:34:14 mail.ayyoubaissaoui.com postfix/smtps/smtpd[146143]: disconnect from ns101305.ip-147-135-6.us[147.135.6.154] commands=0/0
Feb 17 14:34:15 mail.ayyoubaissaoui.com postfix/smtps/smtpd[146143]: connect from ns101305.ip-147-135-6.us[147.135.6.154]
Feb 17 14:34:15 mail.ayyoubaissaoui.com postfix/smtps/smtpd[146143]: SSL_accept error from ns101305.ip-147-135-6.us[147.135.6.154]: -1
Feb 17 14:34:15 mail.ayyoubaissaoui.com postfix/smtps/smtpd[146143]: warning: TLS library problem: error:14094415:SSL routines:ssl3_read_bytes:sslv3 alert certificate expired:…/ssl/record/rec_layer_s3.c:1543:SSL alert number 45:
Feb 17 14:34:15 mail.ayyoubaissaoui.com postfix/smtps/smtpd[146143]: lost connection after CONNECT from ns101305.ip-147-135-6.us[147.135.6.154]
Feb 17 14:34:15 mail.ayyoubaissaoui.com postfix/smtps/smtpd[146143]: disconnect from ns101305.ip-147-135-6.us[147.135.6.154] commands=0/0

Hello @ayyoubdz Happy you are here

Check your firewall if smtp/smtps ports have rules to allow connection. I have checked you do not have dns failures however, its recommended to setup a rDNS ptr record. This record is essntial for reverse dns lookups that help troubleshooting email delivery issues, antispam filtering, better logging for recipient mail servers to identify email delivery issues

I checked the firewall, here the screenshoot

ports1326×200 17.2 KB

rdns1406×380 55.8 KB

Do you have the correct SMTP settings on GrowMeOrganic ? Check and revert

Yes, here is the screenshot,

SMTP745×875 103 KB

note that I use the same SMTP credentials to connect to other tools like snov without problem

Do not force SSL use TLS

when using port 465 force tls got this :
SMTP → ERROR: EHLO not accepted from server:
SMTP → ERROR: HELO not accepted from server:
SMTP → NOTICE: EOF caught while checking if connected

and when I try using port 587 TLS it keeps loading nothing changes, but I got this on postfix activity :
Feb 17 14:51:15 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: SSL_accept error from ns101305.ip-147-135-6.us[147.135.6.154]: -1
Feb 17 14:51:15 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: warning: TLS library problem: error:14094415:SSL routines:ssl3_read_bytes:sslv3 alert certificate expired:…/ssl/record/rec_layer_s3.c:1543:SSL alert number 45:
Feb 17 14:51:15 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: lost connection after STARTTLS from ns101305.ip-147-135-6.us[147.135.6.154]
Feb 17 14:51:15 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: disconnect from ns101305.ip-147-135-6.us[147.135.6.154] ehlo=1 starttls=0/1 commands=1 /2
Feb 17 14:51:16 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: connect from ns101305.ip-147-135-6.us[147.135.6.154]
Feb 17 14:51:16 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: SSL_accept error from ns101305.ip-147-135-6.us[147.135.6.154]: -1
Feb 17 14:51:16 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: warning: TLS library problem: error:14094415:SSL routines:ssl3_read_bytes:sslv3 alert certificate expired:…/ssl/record/rec_layer_s3.c:1543:SSL alert number 45:
Feb 17 14:51:16 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: lost connection after STARTTLS from ns101305.ip-147-135-6.us[147.135.6.154]
Feb 17 14:51:16 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: disconnect from ns101305.ip-147-135-6.us[147.135.6.154] ehlo=1 starttls=0/1 commands=1

Use port 587 not 465 when using TLS. I recommend you only use STARTTLS protocol

mail server doesn’t use a fully qualified domain name in the SMTP HELO. you seem to have a wrong hostname. Run in ssh terminal

hostname mailmydomain.com

That’s because I use port TLS with port 465 that’s why I got that error

how can use the STARTTLS protocol? I don’t have it on the choices only SSL and TLS

Well protocol is wrong word its just a command to use either TLS or SSL. The upside of using it is server can establish plain-text transmission of an email if an ecrypted transport fails.

Normally for SMTP we use port 587 which allows explicit encryption method

How can I make this command, and will that help me in my case to connect My SMTP to the tool?

Did you try change port to 587 and choose TLS

Yes, I tried it ( port 587 using TLS ) ,it keeps loading nothing changes on growmeorganic,

but I got this on postfix activity :

Feb 17 14:51:15 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: SSL_accept error from ns101305.ip-147-135-6.us[147.135.6.154]: -1
Feb 17 14:51:15 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: warning: TLS library problem: error:14094415:SSL routines:ssl3_read_bytes:sslv3 alert certificate expired:…/ssl/record/rec_layer_s3.c:1543:SSL alert number 45:
Feb 17 14:51:15 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: lost connection after STARTTLS from ns101305.ip-147-135-6.us[147.135.6.154]
Feb 17 14:51:15 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: disconnect from ns101305.ip-147-135-6.us[147.135.6.154] ehlo=1 starttls=0/1 commands=1 /2
Feb 17 14:51:16 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: connect from ns101305.ip-147-135-6.us[147.135.6.154]
Feb 17 14:51:16 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: SSL_accept error from ns101305.ip-147-135-6.us[147.135.6.154]: -1
Feb 17 14:51:16 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: warning: TLS library problem: error:14094415:SSL routines:ssl3_read_bytes:sslv3 alert certificate expired:…/ssl/record/rec_layer_s3.c:1543:SSL alert number 45:
Feb 17 14:51:16 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: lost connection after STARTTLS from ns101305.ip-147-135-6.us[147.135.6.154]
Feb 17 14:51:16 mail.ayyoubaissaoui.com postfix/submission/smtpd[146396]: disconnect from ns101305.ip-147-135-6.us[147.135.6.154] ehlo=1 starttls=0/1 commands=1