Postfix Users

This forum is an archive for the mailing list postfix-users@postfix.org (more options) Messages posted here will be sent to this mailing list.
General discussions about the use of and experiences with the Postfix mail system. Open subscription, unmoderated posting by members only.
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Topics (14719)
Replies Last Post Views
Possible to enforce 4XX error upon dns lookups which result in NXDomain? by Tobi
3
by Wietse Venema
Postfix is not open relay but send spam by Julien Michaux
14
by Bill Cole-3
Centos 7 turn on pypolicyd-spf by Emanuel
7
by Emanuel
Virtual Users not getting populated in verify_cache by schmerold2@gmail.com
3
by Wietse Venema
postscreen_pipelining_enable vs. Exim / BDAT by Philip Paeps
8
by Philip Paeps
Block Email with Same Address in To & From by Bilal
1
by Wietse Venema
Postfix on a dynamic DNS server not receiving a handful of emails by mbridgett
2
by mbridgett
Correct tls settings by Postfix User-2
2
by @lbutlr
Trying to understand error message in logs by angelo
7
by angelo
Respecting MTA-STS by Micah Anderson-2
7
by Viktor Dukhovni
Split Domain MTA relay access denied by ab
6
by ab
how to get statistics about inbout/outbound messages by Wesley Peng-5
1
by @lbutlr
MAILTO without SIZE= by Tobias Köck
7
by Tobias Köck
How to avoid being classified as spam by Google? by martin f krafft-2
26
by martin f krafft-2
default_destination_rate_delay by Philip
1
by Wietse Venema
Encrypt outgoing emails. by postfix-9
2
by Noel Jones-2
How to make Postfix use hostnames from /etc/hosts ? by Jaroslaw Rafa
5
by Viktor Dukhovni
Only logging from a connection when an unrelated error is forced in main.cf by Gerben Wierda
8
by Wietse Venema
Is this a good smtpd restrictions set? by Gerben Wierda
1
by Hugo Florentino
Understanding master.cf by Gerben Wierda
4
by Viktor Dukhovni
Limiting mail relay by Patrick Mahan
2
by Patrick Mahan
Blocking an address from submission mail by @lbutlr
1
by Bill Cole-3
warning: hostname does not resolve to address by Christian Göttsche
1
by @lbutlr
outbound.protection.outlook.com by ratatouille-2
10
by angelo
Postfix as backup MX by subscription1
2
by subscription1
Sending mail to Gmail users via Gmail server? by Jaroslaw Rafa
9
by Stuart Henderson
Specifying certificates in master.cf by linkcheck
19
by Thilo Molitor
Prevent sender address spoofing by Hugo Florentino
23
by @lbutlr
RE: Virtual Alias Domains by Nicolas Breuer
7
by Viktor Dukhovni
Suggestions for submission protection by Daniel L. Miller
8
by Bill Cole-3
Connection reuse and tlsproxy by Emmanuel Fusté-2
5
by Wietse Venema
Is there a version 2.11 or higher of postfix supportting cyrus ? by feier8097
2
by feier8097
copy of mails with specific From-field by ceddie
8
by Matus UHLAR - fantom...
How to pass "no_milters" option to pickup daemon? by Jaroslaw Rafa
8
by Jaroslaw Rafa
dovecot lmtp and virtual_mailbox_maps by David Wells - Alfavi...
3
by Viktor Dukhovni
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