Simple Mail Transfer Protocol is the protocol used for sending email.

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11 views

debugging a curl request / what would be the curl request to test whether a given username / password is working against a speciific smtp server

I have a customer using a specific app that uses secure smtp to connect for outgoing email. I have a suspicion that it somehow got changed (whether by them or by the hosting provider is irrelevant). I ...
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1answer
19 views

AT&T's SMTP to SMS increments sender address

I have a service that delivers updates to users through various carriers SMTP APIs, for example for Sprint we e-mail 1234567890@messaging.sprintpcs.com and then the owner of the number 123456789 ...
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21 views

Sending an email using Google's SMTP server [migrated]

I'm having a trouble sending an email using Google's SMTP Server. I've looked for a solution but i have not found one. So here's the code. import javax.mail.Message; import ...
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1answer
48 views

Unable to send email via any of SMTP servers using an IP camera, why?

I'm trying to setup Mail Settings on my IP Camera, but none of the SMTP servers seem to work, and this is only happening when it's connected on my DSL connection! Otherwise it works great on my cable ...
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1answer
30 views

What does MX 0 (no glue) [RESOLVE FAILURE] mean? [closed]

Here is an NS trace to show what I mean. I’m trying to setup a mail server, and I think I have done this. But in order to test and use, I need MX records. I set an MX record in my zone as such. ...
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2answers
42 views

Can an email delivery silently fail?

Can an email delivery silently fail ever, with the sender receiving no notification whatsoever about the failed delivery? Specifically, can silent delivery failures occur for mail sent to a Gmail ...
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0answers
12 views

Can't send email with Postfix SMTP

I've setup a postfix server with dovecot and mysql. The server accepts emails from my gmail account and I can retrieve them with IMAP desktop client but I can't send emails. /var/log/mail.log Mar ...
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1answer
18 views

Postfix / Dovecot Mail appears in logs, but not in its respective folder

I'm currently trying to set up Postfix with Dovecot, but something does not seem to work the way it should be. For some reason, mails I sent to my mail account appear in the logs, but do not become ...
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0answers
18 views

How to setup a SMTP hook

I have an edimax ic3140w camera on a domestic alarm system which provides out of the box event notification through: - Email (SMTP) - FTP upload - Push Notifications ideally I'd like to have the ...
0
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1answer
33 views

Use AWS EC2 to redirect incoming mail

Is it possible to setup an EC2 instance as a mail server and relay incoming mail to my domain to my in-house server on a different port than port 25? Right now I use rollernet.us for this. Which ...
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101 views

How do I find out if a printer is scan to email compatible with Office 365?

I have a Toshiba e Studio 282 that previously had scan to email going through an Exchange server. The Exchange server was decommissioned and the company got Office 365 instead. I tried inputting the ...
1
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1answer
101 views

postfix - warning: connect to transport private/smtp: Connection refused

I have been having trouble with my postfix+dovecot mailserver. Every time I try to send an email to a different server (gmail etc.) I get the following messages in the log: postfix/qmgr[28918]: ...
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1answer
26 views

What Exchange permissions are given to each receive connector? (Bypass SPAM, etc)

Exchange has a list of permissions that are assigned to each connector based on the checkbox selection below. Here are an example of some SMTP headers that are used internally (in routing) to ...
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0answers
17 views

Invalid hostname in HELO sent by MUA

I have a mail server running exim4 with an ACL that drops the smtp session if the hostname in HELO is an IP address. Exim is configured to do the reverse dns check. The said ACL is the very first one ...
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0answers
18 views

Conditional relay with credential based on domain recipient?

I use postfix to send email directly, but sometimes outlook.com won't deliver my business email messages. After changing the SPF record, the delivery succeeded, but goes to the recipient's Spam ...
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0answers
24 views

Postfix private relay

I've setup my postfix + dovecot server successfully and can send/receive mail however I would like to setup a cluster of 2-3 extra servers which are used for outgoing mail. I have looked into options ...
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0answers
24 views

purpose of MIME in mail message header

I received a mail which contains only english alphabets (hence all are ascii and shown below). When I checked the header of the mail (which is posted below), as far as I know, "MIME-version:1.0" is ...
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1answer
30 views

custom domain email forwarding catchall recovery [closed]

In short, I'm trying to restore mailflow for a free domain I setup with unonic. (3 technically) They worked fine for about a year. *@example.tld would all forward to my@personal.email. January 6th, ...
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19 views

How to investigate for mail not sent/received

I've got a classic ASP page that sends emails to registered users. From one month to date, some users which have their emails on 3 specific domains, are not receiving emails. Some others with their ...
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1answer
55 views

send mail through msmtp

I've been trying to send mail with msmtp with no success Configuration file: ~/.msmtprc defaults auth on tls on tls_trust_file /etc/ssl/certs/ca-bundle.crt logfile ...
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54 views

550-Please deliver mail to the address specified in the MX records for this 550 domain

I have a PHP script which emails the results of a form to a specified address. Previously it was working fine but now it's not sending email anymore. When I check the error log, I see this error: ...
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1answer
503 views

552 This message is not RFC 2822 compliant [smtp-07.iol.local; LIB_670]

I have had autoresponder emails set up for a while already, and suddenly I get the following message as undelivered. I only got this one time, so it seems not to be a general problem. I checked RFC ...
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2answers
28 views

What have I done wrong with my Postfix config?

My mailserver has been sending emails fine and dandily to newsletter subscribers via the Mandrill app, but I have not been receiving emails on the domains I want, I only want mails to go to the user ...
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1answer
197 views

Email not being sent from Moodle [closed]

I’m using Moodle where I allow user to register themselves, after which an email is sent to them. However, when user are registering, the email is not being sent and I’m getting the error: Tried ...
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0answers
265 views

Postfix - SMTP mail delivery failed with “Connection timed out” error

I have installed postfix mail server in ubuntu machine. I am facing some issues with the mail sending to other domain mail servers (Google, Yahoo, Outlook...). I am using virtual domain to send the ...
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0answers
223 views

How to configure to send emails from localhost pc with postfix xampp and xubuntu configuration

I am building some website and for testing purposes i need to configure somehow to be able to send emails from my pc. I have xubuntu installed on my home pc and xampp for local development. I have ...
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0answers
29 views

Is there a way to have multiple SMTP sending services configured in WHM?

I have WHM installed on my server and I have Mandrill setup to handle all mail requests. Right now all the mail runs through that SMTP server. Is there a way to take a domain on the server, ...
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0answers
129 views

macosx: How to unblock SMTP port?

In /var/log/mail.log I see runs of time-out errors in quick succession, like this Dec 13 15:50:31 myserver postfix/smtp[2911]: connect to alt2.gmail-smtp-in.l.google.com[74.125.138.26]:25: Operation ...
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0answers
78 views

How to set up a sendmail relay using HP-UX 11.x

I need to setup and HP-UX 11.23 system as a mail relay to collect mail from other internal HP-UX servers and relay them to the MS Excahnge operated smtp relay for delivering internet bound mail to the ...
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0answers
236 views

Connecting Brother MFC-L2740DW to SMTP via SSL

Its very frustrating to see that I bought this MFC-L2740DW just a few weeks ago and its 2014 released printer with AirPrint support. I'm not able to activate a feature called 'scan to email server', ...
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32 views

msmtp complains no auth method found

msmtp output: <-- 220 example.com ESMTP Postfix (Ubuntu) --> EHLO example.com <-- 250-schemacs.com <-- 250-PIPELINING <-- 250-SIZE 10240000 <-- 250-VRFY <-- 250-ETRN <-- ...
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61 views

Moved to Office 365, want to use SBS exchange as SMTP relay

I've recently setup an Exchange Online subscription with Office 365 - for all the benefits of cloud email in a small business. My onsite server is Windows SBS 2011. My problem is that my internal ...
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2answers
252 views

How to use unencrypted SMTP/POP3 to connect to Outlook.com, Gmail or other email services?

My new multifunction printer only works with unencrypted SMTP and POP3 (so 90's!), but most of the popular email services such as Outlook.com and Gmail only support encrypted SMTP and POP3. Is there a ...
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0answers
143 views

Mail Enable: mail server requires authentication when attempting to send to non-local users

I get this error: Bad sequence of commands. The server response was: This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client ...
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0answers
57 views

Multiple postfix instances one host

I have a server on which i need to add setup a second postfix configuration to send e-mail (doesn't have to receive) that's being sent in from a PHP web application that's hosted on the server aswell. ...
0
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1answer
174 views

SMTP fails using Thunderbird after dropping Comcast, installing CenturyLink

On two Windows 7 PC's, an Android tablet, and Android phone, a dozen email accounts have been working fine for many years. I disconnected Comcast and installed CenturyLink service using Actiontec ...
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246 views

Postfix SMTP message being marked as SPAM by Gmail and Yahoo

I'm having a problem getting my low-volume of legitimate email messages through the SPAM filters of Gmail and Yahoo. I have followed Gmail's guide here: https://support.google.com/mail/answer/81126 ...
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0answers
91 views

Able to receive, but not send email over SMTP from VPS. I don't think I'm being blacklisted

The error I get is "421 Downstream server error" or something similar. Up until a few days ago I could send mail without any trouble. I've searched around, and most other people with this problem end ...
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0answers
312 views

Why does postfix give “lost connection after EHLO” error when Gmail tries to connect to my SMTP server?

I'm trying to setup my gmail account so that I can send emails that appear to come from another email address I own (myuser@mydomain.com). Instructions to do so are here. When I try to do it, it ...
0
votes
1answer
65 views

How does email routing work?

I want to understand how email routing works. Lets say I am trying to send a message to someone @gmail.com. According to my current understanding, the following steps happen: DNS MX query on ...
2
votes
2answers
103 views

How to deal with mail senders failing on STARTTLS?

I try to use my mail server richtercloud.de for subscriptions to vger.kernel.org mailing lists. I set up postfix 2.11 running on Ubuntu 14.04 and sending and reception works. I set up postfix to ...
0
votes
1answer
55 views

What does `!+local_domains` in router specifications of exim4 config file mean?

Following several tutorials on how to configure exim4 (e.g. http://www.datadisk.org.uk/html_docs/exim/routers.htm) I started wondering what a good explanation for !+local_domains in the specification ...
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1answer
2k views

Workaround for adding forward addresses to Gmail as aliases

I went to add an alias to a forwarded address (managed by GoDaddy, ie myemail@mydomain.com) in Gmail, and I noticed that Google changed their system. In the past, after you entered the name and email ...
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0answers
20 views

How to add new 'From' email id each time sending email using PostFix server

I am new to PostFix and have setup PostFix as a server recently. In the testing, PostFix is working fine and relaying the emails with 'From' email address stored in the PostFix credentials files likes ...
0
votes
1answer
204 views

How to ask for return receipt and set importance in Mutt?

I would like to be able to ask for a return receipt and set importance levels in emails when I am sending emails from Mutt (using Mutt Smtp sender). I can not find a way online, maybe not doing the ...
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0answers
236 views

Spam filtering on a VPS at SMTP using WHM

CENTOS 5.10 i686 xenpv – server WHM 11.44.1 (build 18) I am addressing this problem: I have a VPS set up as MX for several of my domains. The e-mail for these domains are just aliases to other mail ...
3
votes
0answers
109 views

dovecot WILDCARD SSL (certicate.crt, private.key, intermediate.crt) not working

I have installed dovecot and postfix and got it working, but when I change the ssl_cert_file, ssl_key_file and ssl_ca_file dovecot configuration to my WILDCARD SSL certificate (working on apache) it ...
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0answers
27 views

Postfix not working with non self signed SSL Certificate

I have installed postfix and generated a self signed SSL certificate, it was working, then, I tried to configure it to use my WILDCARD ssl Certificate that is configured to apache2. Then I started ...
0
votes
1answer
197 views

How to get my email to send from outlook after switching to Frontier service provider

I have recently moved to a new location and brought my computer with me, naturally. I purchased internet service through Frontier and figured that my POP email on Outlook, through secureserver.net, ...
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2answers
849 views

Can't send mail with Apple Mail with Outlook.com due to SMTP

To preface, I know for a fact that the password I am using is correct as per outlook.com's instructions and every tutorial I can get my hands on. It should be my password I use to enter the account, ...