Questions tagged [sasl]

Question 1

I'm implementing Postfix + Cyrus SASL abd facing an issue: Postfix with Cyrus SASL (sasldb2) auth fails with "535 5.7.8 Error: authentication failed", what happened? /etc/postfix/main.cf ...

Question 2

I have created a user using: saslpasswd2 -c secureuser While running strings /etc/sasldb2 , it exposes password as string in plain text. Config file /etc/sasl2/memcached.conf has PLAIN mechanism. Is ...

Question 3

I have a problem with my Postfix/Dovecot mail server authentication when using a mail client such as Outlook. I can add an account to the client app, and it is successful connecting to the Inbox, but ...

Question 4

On my Ubuntu 22.04 server I've installed dovecot to use an SASL authentication mechanism with postfix. In the /etc/dovecot/conf.d/10-master.conf file: service auth { unix_listener /var/spool/...

Question 5

I have saslauthd working correctly on port smtps, users can send emails where ever they are. I also have a firewall rule allowing access to SMTPS only from certain countries. However I constantly see ...

Question 6

im trying to update an old project via SVN and get this: SASL authentication error: SASL(-1): generic failure: internal error: failed to init cipher 'rc4' openssl tells me RC4 is disabled by default ...

Question 7

I upgraded my FreeIPA server on Rocky 9 and the GSSAPI mechanism for Kerberos no longer works. I'm getting error 49, invalid credentials. In the /var/log/sssd/sssd_caps.int.log it shows: * (2024-...

Question 8

I am adding a Postfix /dovecot mail server in Outlook 2016. It works on my phone and I can successfully authenticate using: doveadm auth test user pass postconf -n alias_database = hash:/etc/aliases ...

Question 9

Some email hosters are jerks. No matter your blacklist standing, SPK, DKIM, or DMARC, they will block your emails. To deal with that, I've set up a relay using sender_dependent_relayhost_maps. There ...

Question 10

I have a working postfix 3.5 relay where the config includes: smtpd_client_restrictions = permit_mynetworks, reject_unknown_client_hostname, permit smtpd_helo_required=yes ...

Question 11

I have been all around the houses trying to configure Postfix and Dovecot so I can send through my domain from Gmail, which as far as I know is simply Gmail acting as a regular SMTP client talking to ...

Question 12

Goal: Configure smtpd to authenticate connections by using postfix, cyrus, saslauthd, pam and mysql. Investigation Authentication via courier-pop3 & courier-imap using mysql works saslauthd ...

Question 13

i am trying to run a selfhosted mailserver using postfix and dovecot. firstly i configured only postfix without dovecot and that worked fine but i wanted to use a mail client so i installed dovecot to ...

Question 14

I'm not a postfix expert... I'm having an authentication problem with posfix 3.5 on debian 11.8. I've added a test user : # saslpasswd2 -c test Password: test Using swaks to test authentication to ...

Question 15

We are using cyrus (and exim) as a long-running mail server. The requirement to store passwords in email programs seems to be a security risk to me. I would like to move auth behind something like ...

Question 16

if I have a list of restrictions for: smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_rhsbl_helo dbl.spamhaus.org, reject_rhsbl_reverse_client dbl.spamhaus....

Question 17

I have configured postfix SMTP server for mail sending only with below configurations, I've used cyrus-sasl to authenticate with openLDAP, I want to achieve SMTP port 25 to use insecure connections ...

Question 18

I am getting these two errors in my mail logs: Aug 25 22:51:23 ns1 postfix/smtpd[246267]: warning: unknown[94.156.102.101]: SASL LOGIN authentication failed: authentication failure Aug 25 22:55:22 ns1 ...

Question 19

I have a working postfix mail server. It is registered under two DNS names: mail.xxxx.de and xxxx.no-ip.org. I use SASL via dovecot for relay authorisation. It works flawless when the client uses the ...

Question 20

I have Postfix installed on a Fedora 38 box with the following: $ grep smtp_ main.cf smtp_sasl_auth_enable = yes smtp_sasl_type = cyrus smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd ...

Question 21

Host cannot send mail over relay host with port 587. I have two servers. One mail server and one server that uses the mail server as a relay host. The client server should send over Port 587. A telnet ...

Question 22

I try to set up a connection to a openLDAP server running on NetBSD 10 via TLS and SASL. When I try ldapsreach -Y EXTERNAL I get ldapsearch: not compiled with SASL support and ldd /usr/bin/ldapsearch ...

Question 23

I configure openldap with sasl bind. Trying connect: # ldapsearch -v -H ldaps:// -Y PLAIN -U [email protected] But getting error: ldap_sasl_interactive_bind_s: Local error (-2) I create a config ...

Question 24

i have a problem that my fail2ban will not ban sasl authentications against my postfix. This is an example log entry from /var/log/syslog: Jul 31 13:42:21 v50428 postfix/smtps/smtpd[635398]: warning: ...

Question 25

Here's the output of doveconf -n: # 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.7.2 () # OS: Linux 5.17.5-x86_64-linode154 x86_64 Ubuntu 20.04.4 LTS # Hostname: mail....

Question 26

My use case is to use my own mail server to send emails from CCTV NVRs to overcome the daily limits imposed by GMail. The NVR has an option to setup authentication. The config worked for whitelisted ...

Question 27

I have had a postfix server running flawlessly for three months now. Users log in to the server in their respective mail clients by connecting to mail.mydomain.com (with SSL) and there's never been ...

Question 28

I have set up Postfix to use Dovecot SASL with PAM and Unix users, and Dovecot LDA (LMTP) for local mailbox storage. After some testing, turns out incoming mail gets declined with the reason: Error: ...

Question 29

I've set up Postfix to authenticate with SASL on a Ubuntu based system. I've done this by following along with some recipes, but mostly readying a lot of the docs. One bit that works, but which I don'...

Question 30

I want to use the following configuration for Postfix: smtpd_relay_restrictions = permit_mynetworks reject_sender_login_mismatch permit_sasl_authenticated defer_unauth_destination, ...

Question 31

Thanks to @AlexD idea, we'll implement the following transport table in order to simulate a IP failover using the DNS MX resolution (postfix 3.3) Relay for 2 domains, exemple[12].com exemple1.com ...

Question 32

I'm trying to get SMTP-AUTH working on a Mint Linux 20.2 machine, and I'm having trouble getting authentication to happen. I have installed Cyrus sasl2, and apparently configured it properly - ...

Question 33

I want to setup postfix on my nagios server to relay emails to our Microsoft Exchange server and I am running into issues with authenticating with Microsoft Exchange. Specifically I am getting this ...

Question 34

I've followed tutorial on http://flurdy.com/docs/postfix/ to set up an email server, and most of it works (after switching from Courier to Dovecot). Just not sending email through SMTP. Sending with ...

Question 35

Using CentOS 8, I've setup dovecot and postfix and tested that: I can sign in as an authenticated user Read email (IMAP) Send email to the same/different account on the server Send email outbound, to ...

Question 36

dovecot --version 2.3.4.1 (f79e8e7e4) Ok, I tried to enable mail-crypt but it's being weird. I'm using https://doc.dovecot.org/configuration_manual/mail_crypt_plugin/#ec-key. I ran: cd $HOME openssl ...

Question 37

I am trying to use SENDMAIL (v8.15) on a Pi in my network to just forward mails to my SendGrid account. This is needed because my legacy webcams on my network cannot use the very long password ...

Question 38

As I built a mailserver I have another question in process that I haven't been able to find in google so I am expecting I will get a answer here. The update is I created a mailserver with postfix ...

Question 39

So i have been building a mail server and i have setted up postfix and a database now what i want is that cyrus should authenticate my users of mail server from a database i have setted up a database ...

Question 40

PS(SOLVED: Solution for Alpine Linux as of Mar 2021, the fix in cyrus-sasl 2.1.27-r12 is in edge branch. 3.13 only has cyrus-sasl 2.1.27-r10. PS: I know there are similar posts but they are very dated ...

Question 41

Although I have found two answers to this, I can't work out how to actually implement them, and at least one of them doesn't actually answer the question. So if anyone has any experience to share I'd ...

Question 42

I have a mailserver with postfix, dovecot and mysql running on Debian buster. Everythings works fine so far, but I would like to setup a scenario where the login name for SASL auth is different from ...

Question 43

I am using this chunk of code inside /etc/postfix/master.cf to force people to securely "subimt" email through port 465 which uses protocol SMTPS. SMTPS supports mandatory TLS which I use to ...

Question 44

I am transferring MTA to newer servers running Ubuntu 20.04 LTS. SMTPS is working well thus permitting clients to send mails after authentication. However, when sending mails from remote MTAs for ...

Question 45

I'm trying to configure saslauthd with PAM. I created a user test with password test using useradd and passwd and I checked that I can login with su - test. [arch@vps-5220ce87 ~]$ systemctl status ...

Question 46

I set the Postfix so that my mailboxes (maildir format) for my virtual users are set like this: ┌───┐ │ # │ root > myserver > ~ └─┬─┘ └─> ls -l /var/mail/ total 4 drwxr-sr-x 5 postfix ...

Question 47

I use OpenLDAP 2.4.54 with Alpine. Here is my ldap configuration $ sudo slapcat -n0 dn: olcDatabase={-1}frontend,cn=config objectClass: olcDatabaseConfig objectClass: olcFrontendConfig olcDatabase: {-...

Question 48

I'm trying to setup Kerberos auth over SASL using OpenLDAP. As I understand it, I need a host keytab in /etc/krb5.keytab from the KDC I'm using and then {SASL}user@realm in the given user's LDAP ...

Question 49

I am receiving an unknown password verifier(s) auxprop error when trying to use SQLite for SASL authentication in Postfix on CentOS 7. It seems that the SQLite SQL engine is not found. Contents of /...

Question 50

I've configured two openldap fully functional in HA (syncrepl mode provider - slave). After testing that simple bind syncrepl works flawlessly, I'm trying to deploy from scratch using only GSSAPI to ...