DR7PBX
March 24, 2021, 7:17pm
1
I need to setup postfix to relay using an SMTP server. There is no AUTH LOGIN so I do not need to setup the usual sasl_passwd file.
Telnet Successful
I can successfully use telnet to send an email from the SMTP server.
[1] telnet relayserverdomainFQDN 25
[2] EHLO
[3] MAIL FROM:[email protected]
[4] RCPT TO:[email protected]
[5] DATA – add body content
Postfix Setup Not Successfull
[1] Add this value to /etc/postfix/main.cf
relayhost = [relayserverdomainFQDN]:25
[2] postfix reload
[3] sudo -u asterisk mail -s TestEmail [email protected]
Result: No relay. Email sent directly from server.
You may need to set the mynetworks
variable in main.cf
. So assuming your internal network is 192.168.1.0/24:
mynetworks = 127.0.0.0/8 192.168.1.0/24
DR7PBX
March 24, 2021, 7:27pm
3
No dice on the modified values:
relayhost = [relayaddress]:25
mynetworks = 127.0.0.0/8 10.0.0.0/8
May also need to specify:
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination
Make sure to restart postfix after the changes as well.
DR7PBX
March 24, 2021, 7:29pm
5
Went ahead and added that line as well as a postfix reload and service postfix restart. No luck.
Try adding check_recipient_access hash:/etc/postfix/access.recipients
in the smtpd_recipient_restrictions
variable. So:
smtpd_recipient_restrictions =
permit_sasl_authenticated,
permit_mynetworks,
reject_unauth_destination,
check_recipient_access hash:/etc/postfix/access.recipients
then create /etc/postfix/access.recipients
and in it put all recipient domains you want to allow
domain.com OK
Then run postmap /etc/postfix/access.recipients
and restart postfix. If it’s not that then it’s past my postfix knowledge, sorry
1 Like
DR7PBX
March 24, 2021, 8:08pm
7
While it didn’t, I do appreciate all of your help! It was a valiant effort. If I can figure this out, I’ll share the solution.
1 Like
DR7PBX
March 24, 2021, 8:33pm
8
Solution
[1] Turns out the relay was actually working (I didn’t have access to the SMTP server itself), but it kept the source from address.
[2] Edit generic file
Add: sourcefrom desiredfrom
i.e., freepbx.local [email protected]
[3] Add to main.cf
smtp_generic_maps = hash:/etc/postfix/generic
[4] Run postmap against generic
[5] reload postmap; restart postmap; run test email
1 Like
Lol I literally offered this solution to someone recently here . Good work figuring it out!
1 Like
system
(system)
Closed
June 3, 2021, 11:08pm
10
This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.