Hello all

I am new here but now as much new to linux servers

I am trying (for the past 3 days) to setup a mail server.

I dont even know where to start so you guyz are my last resort…:-)

This is the tutorial I was following:

~~[https://www.linode.com/docs/email/postfix/email-with-postfix-dovecot-and-mysql" target="_blank">](https://www.linode.com/docs/email/postf … -and-mysql">https://www.linode.com/docs/email/postfix/email-with-postfix-dovecot-and-mysql](

I followed it twice!!

My SSL is self-signed!

At first it was rejecting mail.

Now it recognizes the mail and users but I can not connect to the server with a mail client (TB).

Trying to troubleshoot this i went through:

~~[https://www.linode.com/docs/email/postfix/troubleshooting-problems-with-postfix-dovecot-and-mysql/" target="_blank">](https://www.linode.com/docs/email/postf … and-mysql/">https://www.linode.com/docs/email/postfix/troubleshooting-problems-with-postfix-dovecot-and-mysql/](

I have tried and tried endlessly…..I am kinda tired of this but it has to be resolved.

Hopefully with communal help!

1. Telneting ports 993/995 fails - connection refused

(Checking Port Availability on Troubleshooting guide)

2. My iptables

*filter

Allow all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0

-A INPUT -i lo -j ACCEPT

-A INPUT -d 127.0.0.0/8 -j REJECT

Accept all established inbound connections

-A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT

Allow all outbound traffic - you can modify this to only allow certain traffic

-A OUTPUT -j ACCEPT

Allow HTTP and HTTPS connections from anywhere (the normal ports for websites and SSL).

-A INPUT -p tcp --dport 80 -j ACCEPT

-A INPUT -p tcp --dport 443 -j ACCEPT

Allows imap and imaps connections

-A INPUT -p tcp --dport 143 -j ACCEPT

-A INPUT -p tcp --dport 993 -j ACCEPT

Allows SMTP access

-A INPUT -p tcp --dport 25 -j ACCEPT

Allows pop and pops connections

-A INPUT -p tcp --dport 110 -j ACCEPT

-A INPUT -p tcp --dport 995 -j ACCEPT

Allow SSH connections

#

The -dport number should be the same port number you set in sshd_config

#

-A INPUT -p tcp -m state --state NEW --dport XX -j ACCEPT

Allow ping

-A INPUT -p icmp -j ACCEPT

Log iptables denied calls

-A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7

Drop all other inbound - default deny unless explicitly allowed policy

-A INPUT -j DROP

-A FORWARD -j DROP

COMMIT

3. tail -50 mail.log

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: matchlistmatch: 2607:f8b0:4002:c01::231: no match

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: autoclntopen: connected to private/anvil

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: send attr request = connect

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: send attr ident = smtp:2607:f8b0:4002:c01::231

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: private/anvil: wanted attribute: status

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: input attribute name: status

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: input attribute value: 0

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: private/anvil: wanted attribute: count

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: input attribute name: count

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: input attribute value: 1

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: private/anvil: wanted attribute: rate

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: input attribute name: rate

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: input attribute value: 1

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: private/anvil: wanted attribute: (list terminator)

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: input attribute name: (end)

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: > mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: 220 tuvia ESMTP Postfix (Ubuntu)

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: < mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: EHLO mail-yh0-x231.google.com

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: matchlistmatch: mail-yh0-x231.google.com: no match

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: matchlistmatch: 2607:f8b0:4002:c01::231: no match

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: > mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: 250-tuvia

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: > mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: 250-PIPELINING

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: > mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: 250-SIZE 10240000

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: > mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: 250-VRFY

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: > mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: 250-ETRN

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: > mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: 250-STARTTLS

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: > mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: 250-ENHANCEDSTATUSCODES

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: > mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: 250-8BITMIME

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: > mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: 250 DSN

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: < mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: STARTTLS

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: > mail-yh0-x231.google.com[2607:f8b0:4002:c01::231]: 220 2.0.0 Ready to start TLS

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: send attr request = seed

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: send attr size = 32

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: private/tlsmgr: wanted attribute: status

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: input attribute name: status

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: input attribute value: 0

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: private/tlsmgr: wanted attribute: seed

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: input attribute name: seed

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: input attribute value: QqL2gZc2wNj0tEfYVayPHSOYEli54ReQSYq28nQqm7E=

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: private/tlsmgr: wanted attribute: (list terminator)

Oct 7 17:59:14 tuvia postfix/smtpd[17982]: input attribute name: (end)

Oct 7 17:59:15 tuvia postfix/smtpd[17982]: xsasldovecotserver_create: SASL service=smtp, realm=(null)

Oct 7 17:59:15 tuvia postfix/smtpd[17982]: name_mask: noanonymous

Oct 7 17:59:15 tuvia postfix/smtpd[17982]: xsasldovecotserver_connect: Connecting

Oct 7 17:59:15 tuvia postfix/smtpd[17982]: warning: SASL: Connect to private/auth failed: Connection refused

Oct 7 17:59:15 tuvia postfix/smtpd[17982]: fatal: no SASL authentication mechanisms

Oct 7 17:59:16 tuvia postfix/master[17145]: warning: process /usr/lib/postfix/smtpd pid 17982 exit status 1

Oct 7 17:59:16 tuvia postfix/master[17145]: warning: /usr/lib/postfix/smtpd: bad command startup – throttling

Oct 7 18:00:56 tuvia postfix/anvil[17984]: statistics: max connection rate 1/60s for (smtp:2607:f8b0:4002:c01::231) at Oct 7 17:59:14

Oct 7 18:00:56 tuvia postfix/anvil[17984]: statistics: max connection count 1 for (smtp:2607:f8b0:4002:c01::231) at Oct 7 17:59:14

Oct 7 18:00:56 tuvia postfix/anvil[17984]: statistics: max cache size 1 at Oct 7 17:59:14

4. dovecot.log does not have anything although I set the same usr:grp syslog:adm - is that correct??

(Enabling Verbose Logs on Troubleshooting guide)

CAN ANYONE GUIDE ME THROUGH RESOLVING OR LOCATING THE PROBLEM???

THANK YOU!