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Questions tagged [smtp-auth]

128 questions
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How to identify mail user from Syslog and mail.log?

I have a user on my system who appears to be sending large quantities of mail and I'm having difficulty identifying who he is. I don't know his IP address or username by which he authenticated. One such entry from the syslog is: root@s2:~# zgrep…
Peter White
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Postfix auth issue

I'm currently facing auth issue. When I'm trying to auth via telnet, I face an issue "535 5.7.8 Error: authentication failed: authentication failure" I use password and login the same, as I use for login in my server, but It says, that login…
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EXIM SMTP allows to send mails without login / authentication via telnet to any domain

I'm ashamed, but I have to ask for help. My server is being used for sending spam, I've found out I can simply connect with telnet (edit: from any server in office, home and even directly from CMD/Putty Telnet), add mail from/rcpt to/data without…
Mateusz
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Setup SMTP connection between mautic and iRedMail

I have set up my iRedMail on AWS EC2 small instance, now everything is working fine under port 25, but I need to authenticate users to authenticate themselves. In mautic "to authenticate we need following:" I have created new user and password in…
Deepak Bharadwaj
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Authentication succeeds, but sending still fails

I'm trying to configure my home server to relay e-mails from the family's iPhones. To this end I created a single "user" account in the server's SASL-database and configured sendmail to use CRAM-MD5 as the sole SASL-mechanism. In the log (at high…
Mikhail T.
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sendmail authentication with passwords in SHA512 hash

Is it possible for sendmail to authenticate users from LDAP with passwords stored as SHA512 hash ? If yes, how? Edit: OS is Arch Linux and i want to use only LDAP to authenticate users.
Aas
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linux sendmail doesn't work (stat=deferred)

I have set up an linux webserver on my raspberry pi and now want the server be able to send emails without configuring a complete mailserver. Thats why I have chosen the MTA 'sendmail', which I'm trying to configure correctly for days now. In my…
pixelmusik
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Contact form from ubuntu to Zoho email address

I would like some support in order to get my Postfix configuration working with my Zoho email account. What I am trying to do is to send a message from my contact form in http://www.g3eo.com/#!/page_Contacts to my Zoho email account. For that I…
Gery
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How to restrict SMTP login to its own address in sasldb2?

I'm using sasldb2 (without saslauthd) for SMTP authentication with Postfix. To create a new user, I run saslpasswd2 -u example.com mail which creates a login mail@example.com. However, using these credentials, I can successfully connect to and send…
danijar
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How to allow authenticated User to relay on a Cisco ESA C170 (iron port)

I'am trying to configure my ESA C170 and all works as expected. But now I want to add support for relay function for authed external user. I add a SMTP Auth Profile against LDAP that works. Next Step is to configure HAT and the sender group. If I…
kockiren
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How can I easily setup a SMTP reverse proxy from EC2 to SES?

How can I easily setup a SMTP reverse proxy from EC2 to SES without revealing SES the original SMTP Client IP?
GeekTantra
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Javamail using Exchange as relay

I have to fix an "unable to relay". The java server has to send emails to the internet. The java server and the exchange server are in the same network. How I configure properly a receive connector in exchange server 2010 to avoid as it is in the…
user5193276
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535 error from gsmtp

I am using Erlang and its esmtp library to send emails from my application. It used to work OK and still works fine on the development machine. Unfortunately several weeks ago it stopped working on the production server. I get the following messages…
Martin Dimitrov
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failed/unauthorized logins attempts via SMTP/IMAP

My server host sent me this message: 80 failed/unauthorized logins attempts via SMTP/IMAP We have detected abuse from the IP address xx.xxx.xx.xx, which according to a whois lookup is on your network. Jan 31 07:24:30 server postfix/smtpd[12371]:…
khalid
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503 AUTH command used when not advertised exim4 - Outlook

I do keep on getting this error: 503 AUTH command used when not advertised I have seen this question: exim configuration: 503 AUTH command used when not advertised The difference is that I do not even have the AUTH option displayed when I telnet to…
Maciej Cygan
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