Question

Can not send mail with postfix

Hi everyone, I’m trying to config sending email from application thought this tutorial.

But when I try to send an test email to my emails, its not work, I also try to sen one or another.

looking for log file its show

Oct 11 16:41:32 mail postfix/pickup[4727]: 81676819B8: uid=1000 from=<myuser@mydomain.com>
Oct 11 16:41:32 mail postfix/cleanup[5349]: 81676819B8: message-id=<20171011164132.81676819B8@mydomain.com >
Oct 11 16:41:32 mail postfix/qmgr[4728]: 81676819B8: from=<myuser@mydomain.com >, size=396, nrcpt=1 (queue active)
Oct 11 16:41:41 mail postfix/qmgr[4728]: 8CF22819B5: from=<myuser@mydomain.com >, size=396, nrcpt=1 (queue active)
Oct 11 16:42:02 mail postfix/smtp[5351]: connect to gmail-smtp-in.l.google.com[173.194.68.27]:25: Connection timed out
Oct 11 16:42:02 mail postfix/smtp[5351]: connect to gmail-smtp-in.l.google.com[2607:f8b0:400d:c0c::1b]:25: Network is unreachable
Oct 11 16:42:02 mail postfix/smtp[5351]: connect to alt1.gmail-smtp-in.l.google.com[2800:3f0:4003:c01::1a]:25: Network is unreachable
Oct 11 16:42:11 mail postfix/smtp[5354]: connect to gmail-smtp-in.l.google.com[209.85.201.26]:25: Connection timed out
Oct 11 16:42:11 mail postfix/smtp[5354]: connect to gmail-smtp-in.l.google.com[2607:f8b0:400d:c03::1b]:25: Network is unreachable
Oct 11 16:42:11 mail postfix/smtp[5354]: connect to alt1.gmail-smtp-in.l.google.com[2800:3f0:4003:c01::1a]:25: Network is unreachable
Oct 11 16:42:32 mail postfix/smtp[5351]: connect to alt1.gmail-smtp-in.l.google.com[64.233.190.26]:25: Connection timed out
Oct 11 16:42:32 mail postfix/smtp[5351]: connect to alt2.gmail-smtp-in.l.google.com[2a00:1450:400b:c03::1a]:25: Network is unreachable
Oct 11 16:42:32 mail postfix/smtp[5351]: 81676819B8: to=<myemail@gmail.com>, relay=none, delay=60, delays=0.01/0.01/60/0, dsn=4.4.1, status=deferred (connect to alt2.gmail-smtp-in.l.google.com[2a00:1450:400b:c03::1a]:25: Network is unreachable)
Oct 11 16:42:41 mail postfix/smtp[5354]: connect to alt1.gmail-smtp-in.l.google.com[64.233.190.26]:25: Connection timed out
Oct 11 16:42:41 mail postfix/smtp[5354]: connect to alt2.gmail-smtp-in.l.google.com[2a00:1450:400b:c03::1a]:25: Network is unreachable
Oct 11 16:42:41 mail postfix/smtp[5354]: 8CF22819B5: to=<myemail@gmail.com>, relay=none, delay=1535, delays=1475/0.01/60/0, dsn=4.4.1, status=deferred (connect to alt2.gmail-smtp-in.l.google.com[2a00:1450:400b:c03::1a]:25: Network is unreachable)

I already using zoho mail service, could it be the reason.

Every thing I work on ubuntu 17.04

Thanks for any help.

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hi Mohsen.

Connection timed out

it seem to be I’m being blocked by DO. How can I fix it.

Thanks anyway.

@thanhtunguyen0608

It looks like you have connection problems try this command nc -zv 209.85.201.26 25 if it times out then you are being blocked by DO.

Also make sure to use latest LTS version from ubuntu that is Ubuntu 16.04, 17.04 will end its life in three months from now.


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HI

finally i made a ticket to DO, they said they will consider to open port 25 after 60 days i create new droplet, cuz they worry about spam problem… so i agree with them. From now i just wait for a couple weeks ahead.

Hello,

I found solution somewhere if it helps you

Go to:/etc/postfix/main.cf

make these changes there:

# Enable IPv4, and IPv6 if supported
#inet_protocols = all

inet_protocols = ipv4

If it worked, just know that your vps/server doesn’t support ipv6.