Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [smtp-auth]

The tag has no usage guidance.

1
vote
1answer
219 views

Server responded: 503 AUTH command used when not advertised\r\n?

I recently migrated from one server where my mail settings worked without a problem to a new server which now results in the following error: Server responded: 503 AUTH command used when not ...
1
vote
0answers
191 views

Exchange Server SMTP Auth Login gets rejected

I have an Exchange 2010 Server that denies SMTP logins on a seperate receive connector for no clear reason. For a groupware I have to enable "auth login" on the receive connector. "Basic ...
1
vote
1answer
747 views

Setup policyd on Zimbra 8.8.x to rate limit the number of messages each account can send with smtp-auth

I'm running Zimbra 8.8.9 and I'm trying to rate limit the number of messages that a single user can send over smtp after authenticating with smtp-auth. The purpose is to limit the damage in case one ...
0
votes
1answer
269 views

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 ...
0
votes
1answer
363 views

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/...
0
votes
0answers
79 views

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 no 25, but I need to authenticate users to authenticate themselves. In mautic "to authenticate we need ...
0
votes
0answers
47 views

configure postfix to allow relaying for virtual mailboxes that are forward only

I have postifx configured as a simple mail forwarder. I have 4 virtual domains in /etc/postfix/virtual with about 10 virtual mailboxes on each which all forward to my business email address. Now, I ...
1
vote
1answer
70 views

Trying to make submission (587) work - Exchange 2016

I'm trying to allow the authenticated relay (Client Frontend connector) to process requests from LAN and internet, but I'm struggling so far. First, I have linked this connector to my SSL wildcard ...
2
votes
1answer
66 views

Reject Exim authentication attempts based on username

Is it possible to set up Exim so that, based on the username passed along to it, it can reject an authentication attempt before it will try to do a password lookup for that username? I've done similar ...
0
votes
0answers
20 views

Does creation of a connected account in Outlook webmail require insecure SMTP?

I'm trying to add an e-mail account in a server I manage (Postfix + Dovecot) as a connected account in my Hotmail account. If I select a send-only SMTP account, I don't see any options for SSL/TLS/...
1
vote
0answers
438 views

Postfix: How to use reject_sender_login_mismatch when using MySQL virtual users?

I want to force senders to use an envelope sender address that's identical to the SASL login username. From the Postfix SASL README I see I should list, in the smtpd_sender_login_maps option, a hash ...
0
votes
1answer
127 views

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 ...
0
votes
1answer
197 views

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.
0
votes
1answer
796 views

postfix: smtpd_sender_login_maps regex matches everything instead of only SASL

I want to prevent spoofing so I found this postfix option: smtpd_sender_login_maps (default: empty) Optional lookup table with the SASL login names that own the sender (MAIL FROM) addresses. ...
1
vote
0answers
1k views

Exim not Listening on port 465 or 587 for TLS connection

I am configuring Exim on a Ubuntu server to send and receive mails via TLS. Followed many guides which shows on how to configure Exim with TLS but still my Exim doesn't listen on 465 or 587 Exim ...
0
votes
0answers
416 views

How to make nginx mail auth connection persistent?

We are using nginx 1.7.3 as a reverse proxy for our Mail SMTP service. For authentication of each SMTP connection, we have configured nginx to connect with a http based service for authentication. ...
2
votes
1answer
622 views

postfix not working correctly after system upgrade (no SASL authentication mechanism)

I had a working postfix/dovecot configuration running on a Ubuntu Server machine 14.04 LTS. Then I made a upgrade to 16.04.2 using do-release-upgrade. Everything seemed to work besides my mail service....
0
votes
3answers
3k views

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 ...
1
vote
1answer
433 views

Authenticated External SMTP Relay

Description I am trying to use "Default MAIL-SERVER" (port 2525) receive connector as an authenticated external relay. I am successful with the mailbox "Bob.smith@domain.com" but I am unable do it ...
-3
votes
2answers
479 views

How to properly use SMTP authentication?

I have been trying to configure Postfix to use SMTP authentication. When I telnet on port 587, I appear to be authenticating correctly, but the mail fails to reach its destination and instead comes ...
0
votes
0answers
266 views

SMTP/ESMTP binding authenticated user with “Mail From” or “From” fileds

I am using Sendmail as MTA supporting ESMTP & AUTH LOGIN. I would like to know any milter program the rewrites "Mail From:" to "authenticated-user@mydomain.--.--". Otherwise, an authenticated ...
0
votes
0answers
356 views

Cannot send mail among local machines: No address associated with hostname

I am attempting to send emails between 2 machines with postfix running on both of them. The variables myhostname is properly set to hostname-1 and hostname-2 respectively in /etc/postfix/main.cf: $ ...
1
vote
1answer
663 views

Postfix SASL allow SMTP Authentication and relay messages

I am trying to set my SMTP server so it allows only SMTP authenticated users to send emails but the actual sending is done via Mailjet. I am running on Ubuntu 14.04 LTS and Postfix version is ...
0
votes
2answers
566 views

Exim doubling up domain name on SMTP-authenticated mail

I'm setting up an Exim 4.87 mailserver with virtual domains stored in a MySQL database. The machine has a hostname of athena.example.com (the example.com of course being fictuous). I want to be able ...
-2
votes
2answers
10k views

Failed SMTP Authentication - TOSHIBA e-STUDIO255

I do have TOSHIBA e-STUDIO255 and i have configured scan to email option. about one week it's worked perfectly but now it's keep giving me this error "Failed SMTP Authentication". i have not change ...
0
votes
1answer
347 views

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/#!/...
3
votes
1answer
67 views

SMTP authentification request transfer to another SMTP

I'm having an issue that's above my competence level. As we're working on improving the security measures that are in place in our network, we found (among others) one flaw that we have no idea how to ...
0
votes
1answer
94 views

How to restrict SMTP login to its own address in sasldb2? [duplicate]

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 ...
0
votes
0answers
2k views

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 ...
0
votes
1answer
472 views

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?
1
vote
0answers
235 views

Sendmail will not accept user ID / pass in SMTPAUTH

To cut down on the possibility of spam, I'm trying to set up SMTPAUTH on my Sendmail (8.14.4 on Mint MATE 17.1 x64) installation. Users can retrieve mail from the server with IMAP or POP (using ...
0
votes
1answer
976 views

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 ...
2
votes
2answers
1k views

Exim: Force email auth for users of local domains

I'm configuring exim4 for virtual users with dovecot and postgresql and I got a problem I cannot resolve, the situation is this: I need that when a 'localdomain' user tries to send a email to another ...
0
votes
0answers
232 views

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 ...
0
votes
0answers
206 views

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 ...
1
vote
1answer
929 views

Is it possible to use CDO libraries (classic ASP) to send mail to Office 365 / Exchange Online?

I'm working on a migration to Office 365 / Exchange Online for a SMB company which until now has been running a local Exchange 2010 server; we're talking about ~25 mailboxes here. However, there's a ...
0
votes
1answer
1k views

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 ...
-1
votes
1answer
707 views

How to configure exim4 for both incoming SMTP for local delivery and relay for authenticated user

I want to use my exim4 mail server as local delivery for anonymous sender for my localdomains, and relay to everyone only for authenticated users. Is it possible?
1
vote
0answers
158 views

Postfix permit localhost use plain login

I have postfix 2.11 setup on Debian jessie with Dovecot SASL and I require encrypted login mechanism to send mail via smtp. For this purpose in the main.cf I've smtpd_tls_auth_only = yes option set. I'...
2
votes
2answers
7k views

postfix/dovecot - how to view smtp auth user in log files?

I am using postfix with dovecot and virtual users on a centos 6 system. I had a rush of spam recently, with tons of packs of 50 recipients delivered from an unknown account. The current logging (...
2
votes
2answers
4k views

Dovecot doesn't create /var/spool/postfix/private/auth

I'm moving an Ubuntu 14.04 postfix mail installation from one machine to another. The current setup works fine pretty much with Ubuntu's default postfix and dovecot setup so that users can use SMTP ...
1
vote
1answer
539 views

Setup Postfix with SMTP-AUTH over SASL2 with SASLDB for users to send emails

Hello, I spent the last few days trying to setup Postfix with SASLDB to send emails from my application over SMTP on Ubuntu Server 15.04. I searched, read and tested a lot about it but I can't get it ...
4
votes
1answer
2k views

Exim not always sending AUTH LOGIN username/password

We are sending mail using exim (configured through WHM). With the same exact configuration, seemingly most of the time exim sends the correct AUTH LOGIN username and password, however sometimes it is ...
2
votes
1answer
1k views

Authenticating SMTP Proxy

I have acquired a number of mail users, and I'm wanting to transition them away from their current mail server and onto mine. I've set up perdition as a proxy which will allow me to proxy IMAP and ...
0
votes
2answers
138 views

Postfix multiple IPs: which to use for SMTP AUTH?

I am setting up a mail server which has separate IP addresses for sending and receiving mail. My config looks like this: # The addresses we send out on: smtp_bind_address = 185.xx.xx.101 ...
1
vote
1answer
36 views

Exchange 2003 restrict anonymous smtp access only

On exchange 2003 I want to listen for smtp on port 25 only so that * anonymous login is only allowed from certain internal IPs * authenticated login is allowed from everywhere I can't see how to do ...
6
votes
2answers
757 views

Postfix deny relay for some virtual users

I'm using Postfix as MTA and relay. Users that wish to send e-mail from a remote system authenticates and Postfix hands that to Dovecot, and this works well. But how can I limit which users can use ...
4
votes
1answer
2k views

How do I get disabling SMTP plaintext authentication to stick on OS X 10.10 Yosemite's Server.app

I've got an SMTP relay server that I recently replaced with OS X 10.10 Yosemite running Server.app. It is running as an SMTP-only relay allowing only hosts from the LAN to relay out through it. We do ...
2
votes
1answer
2k views

check header for Authenticated sender in postfix

My users send email with SMTP AUTH via SASL Authentification. Unfortunately their mails would marked as NoBounceOpenRelay by Amavis. So I set this to postfix main.cf smtpd_sasl_authenticated_header ...
3
votes
2answers
935 views

IIS 6 SMTP unable to relay messages to Exchange Online

Our company uses Office 365 and our email is hosted on Exchange online; however, we have several applications which are unable to send messages directly to Exchange Online due to various reasons (...