Problems with email

When i try to send a mail with rainloop i get this error “Cant connect to server”

Find out what is wrong https://cyberpanel.net/docs/troubleshooting-cyberpanel/

Now you can receive email but can not send

Oct 12 22:19:35 cloud dovecot: imap-login: Login: user=contact@domain.com, method=PLAIN, rip=::1, lip=::1, mpid=3187, TLS, session=<1WqIew948AAAAAAAAAAAAAAAAAAAAAAB>
Oct 12 22:19:35 cloud postfix/submission/smtpd[3188]: connect from localhost[::1]
Oct 12 22:19:36 cloud postfix/submission/smtpd[3188]: 02BC5137096: client=localhost[::1], sasl_method=PLAIN, sasl_username=contact@domain.com
Oct 12 22:19:36 cloud postfix/cleanup[3194]: 02BC5137096: message-id=dd03e40d066613d07e3be0e82ddb4ef5@domain.com
Oct 12 22:19:36 cloud opendkim[865]: 02BC5137096: DKIM-Signature field added (s=default, d=domain.com)
Oct 12 22:19:36 cloud postfix/qmgr[2474]: 02BC5137096: from=contact@domain.com, size=1171, nrcpt=1 (queue active)
Oct 12 22:19:36 cloud postfix/submission/smtpd[3188]: disconnect from localhost[::1]
Oct 12 22:19:36 cloud dovecot: imap(contact@domain.com): Disconnected: Logged out in=964 out=460
Oct 12 22:19:36 cloud dovecot: imap-login: Login: user=contact@domain.com, method=PLAIN, rip=::1, lip=::1, mpid=3202, TLS, session=
Oct 12 22:19:36 cloud dovecot: imap(contact@domain.com): Disconnected: Logged out in=96 out=867
Oct 12 22:20:06 cloud postfix/smtp[3200]: connect to nam.olc.protection.outlook.com[10x.xx.44.xx]:25: Connection timed out
Oct 12 22:20:17 cloud postfix/qmgr[2474]: EA2FA70D8E: from=contact@domain.com, size=1160, nrcpt=1 (queue active)
Oct 12 22:20:17 cloud postfix/smtp[3225]: connect to gmail-smtp-in.l.google.com[2607:f8b0:400c:c01::1a]:25: Network is unreachable
Oct 12 22:20:26 cloud dovecot: imap-login: Login: user=contact@domain.com, method=PLAIN, rip=::1, lip=::1, mpid=3228, TLS, session=
Oct 12 22:20:26 cloud dovecot: imap(contact@domain.com): Disconnected: Logged out in=89 out=860
Oct 12 22:20:36 cloud postfix/smtp[3200]: connect to nam.olc.protection.outlook.com[10x.xx.44.xx]:25: Connection timed out
Oct 12 22:20:36 cloud postfix/smtp[3200]: 02BC5137096: to=rafael_deoliveira@hotmail.com.br, relay=none, delay=60, delays=0.1/0.01/60/0, dsn=4.4.1, status=deferred (connect to nam.olc.protection.outlook.com[10x.xx.44.xx]:25: Connection timed out)

It says

Connection timed out

Are you only having problems with outlook? Did you check port 25, make sure your provider is not blocking this port.

Outlook and gmail. Yes. Port 25 is open.
How can I open port 2525?

What about your IP reputation, did you check?

Can you send to other providers/custom emails?

yes

If you can send to other emails, it means your configurations are fine, please check with your provider and find your IP reputation too.

I only get emails. I can not send. My cyberpanem is installed on the google cloud platform (GCP).

Google does not allow you to send email Sending email from an instance  |  Compute Engine Documentation

Google Compute Engine does not allow outbound connections on port 25. By default, outbound SMTP is blocked because of the large amount of abuse server-to-server SMTP is susceptible to. 

You can try UpCloud for free Promo: CyberPanel - UpCloud

I followed this tutorial but it did not work. Setup External SMTP on Google Cloud Platform (GCP) - CyberPanel

I’m sorry but my knowledge is still very limited.

netstat -lntu
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:8090 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:8891 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:2525 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:993 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:995 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:7080 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:587 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:1899 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:5003 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:110 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:783 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:143 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:465 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:53 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN
tcp6 0 0 :::25 :::* LISTEN
tcp6 0 0 :::2525 :::* LISTEN
tcp6 0 0 :::993 :::* LISTEN
tcp6 0 0 :::995 :::* LISTEN
tcp6 0 0 :::3306 :::* LISTEN
tcp6 0 0 :::3307 :::* LISTEN
tcp6 0 0 :::587 :::* LISTEN
tcp6 0 0 :::1899 :::* LISTEN
tcp6 0 0 :::110 :::* LISTEN
tcp6 0 0 ::1:783 :::* LISTEN
tcp6 0 0 :::143 :::* LISTEN
tcp6 0 0 :::465 :::* LISTEN
tcp6 0 0 :::53 :::* LISTEN
tcp6 0 0 :::21 :::* LISTEN
udp 0 0 127.0.0.1:323 0.0.0.0:*
udp 0 0 0.0.0.0:33963 0.0.0.0:*
udp 0 0 0.0.0.0:54806 0.0.0.0:*
udp 0 0 0.0.0.0:53 0.0.0.0:*
udp 0 0 0.0.0.0:68 0.0.0.0:*
udp6 0 0 ::1:323 :::*
udp6 0 0 :::53 :::*

Whatever you do, Google does not allow sending email from their servers. You need to set up an instance for emails somewhere else.

This tutorial requires you to set up an email server somewhere else. If you read the link I gave you, it clearly states they don’t allow sending an email. So if you open ports locally it won’t make any difference.

You can get more information here Sending email from an instance  |  Compute Engine Documentation

You will continue to waste your time trying to send email on GCP.