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

learn more… | top users | synonyms

0
votes
1answer
70 views

Allowing emails on iptables

I am trying to configure my iptables firewall (currently rejecting all traffic) to allow emails traffic. For SMTP port 465 is used (SMTPS port), and for IMAP it uses port 143. But whatever I try, I ...
2
votes
2answers
2k views

Why sending Mail with Apple Mail takes too long

There is a issue with sending mails through Apple Mail (ver 8.2) every time I try to sending mail. The SMTP Part works fast, after a few seconds the Recipient get the mail but in Apple mail the ...
0
votes
0answers
62 views

Postfix - Alias users SMTP login

I have a postfix mail server, and am looking for a way for aliases to send mail. For example, I have the user alias@example.com which redirects to myemail@gmail.com defined in my mysql mail_aliases ...
1
vote
0answers
87 views

Want to send automatic mails from email server, That To addres has to read from email that i received.?

I want to send multiple mail automatically. I will receive mail as FROM: abc@domain1.com TO: 123@domain2.com BODY: mail contains (username@domain3.com) What I want to is take the ...
0
votes
1answer
49 views

BAT - cannot send emails

THE SITUATION: I am using BAT software to send and receive emails. Everything was working fine, until i moved two days ago to Turkey (in Italy and Latvia everything was working as expected). Since ...
0
votes
0answers
650 views

Port Forwarding SMTP on Vagrant Box

I'm trying to set up a basic postfix server on my local vagrant virtual machine. I followed this tutorial and then telnetted into the server to send a test email, from this document. When I try to ...
0
votes
2answers
592 views

How to force Lotus Notes client to use “Internet mail address” setting in Location properties as “From” and “Reply To” field when using SMTP?

I previously worked in a company where we used Lotus Notes (8.5.3) for mail and other shared databases. Now our team became a Distributor of that company, and the full functionality of Lotus Notes was ...
1
vote
0answers
18 views

How to send authenticated email as same email for public folder with MS Exchange

Is it possible to create an authenticated MSExchange user that can send email on behalf of any other user in the system (public folder emails as well) without configuring it on a user-alias basis? If ...
1
vote
0answers
144 views

Prevent Fake E-Mails with Postfix

I have a secure and almost-properly-configured SMTP/Dovecot server running, but I do have a problem. As it's currently set up, anyone (who has valid credentials) can send e-mail from any address in ...
0
votes
0answers
105 views

make postfix bypass amavis completely for specific domains

I want the postfix agent to bybass the amavis scanner for all mails from and to a specific domain. So, i added the following line to /etc/postfix/main.cf header_checks = ...
0
votes
1answer
1k views

Outlook 2013 cannot send email (“Message rejected under suspicion of SPAM”, error 554)

I have been using a POP3 account in Outlook 2013 to download and send email for some time without any problem. Recently I have setup a new POP3 account and am having difficulty sending email. The ...
1
vote
0answers
18 views

How to switch incoming & outgoing mail servers in Postbox Express after switching hosts?

I recently had all my websites switched over to another host. I have e-mails associated with each website, and I'm using Postbox Express. You'd think it would be easy, but for the life of me, I ...
0
votes
0answers
875 views

smtps service not found/“warning: connect to transport private/smtps: No such file or directory”

I'm trying to access an SMTP smarthost example.com using TLS via port 465 by adding smtps inet n - n - - smtpd -o smtpd_tls_wrappermode=yes -o ...
1
vote
1answer
254 views

How turn on SMTP Authentication?

How turn on SMTP Authentication? When I try to send a email from an email registered in my mail server (example@mydomain.com) to my icloud email (@icloud.com) I receive this back: Mail from IP ...
0
votes
0answers
797 views

Setting up php to send email through IIS

I have a wordpress site on my Windows 2012 R2 IIS server. I have installed SMTP. These are the setting I've done in php.ini: [mail function] ; For Win32 only. ; http://php.net/smtp SMTP = localhost ...
1
vote
1answer
292 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 ...
0
votes
1answer
50 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 1123456789@messaging.sprintpcs.com and then the owner of the number 1123456789 ...
0
votes
1answer
1k 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 ...
0
votes
2answers
419 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 ...
0
votes
1answer
43 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 ...
0
votes
1answer
346 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 ...
0
votes
0answers
400 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 ...
3
votes
1answer
3k 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]: ...
0
votes
1answer
864 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 ...
0
votes
0answers
102 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 ...
1
vote
0answers
81 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 ...
0
votes
1answer
91 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, ...
0
votes
0answers
52 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 ...
0
votes
1answer
446 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 ...
1
vote
0answers
194 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: ...
0
votes
1answer
1k 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 ...
0
votes
2answers
79 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 ...
-1
votes
1answer
2k 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 ...
1
vote
0answers
479 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 ...
0
votes
0answers
336 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 ...
2
votes
0answers
253 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 ...
0
votes
1answer
1k 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', ...
2
votes
3answers
1k 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 ...
1
vote
0answers
109 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
votes
1answer
321 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 ...
0
votes
0answers
525 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 ...
2
votes
0answers
265 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 ...
0
votes
1answer
243 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
208 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
178 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 ...
5
votes
1answer
10k 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 ...
1
vote
0answers
30 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 ...
1
vote
1answer
613 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 ...
1
vote
0answers
378 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 ...
4
votes
0answers
197 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 ...