Questions tagged [smtp]
Simple Mail Transfer Protocol is the protocol used for sending email.
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Redirect OR warn (during initial negotiation?) SMTP submitters to use TLS on port 587 - leave 25 explicitly blocked by firewall for better security
This question went over poorly on S.F., but as I said there I've managed to find a lot of closely related information, but not an answer truly addressing my question.
I am expanding on my homelab ...
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How do I have more than one database for SASL authentication in Postfix?
I currently have Postfix set up to authenticate submission with SASL. The database connection info is stored in /etc/postfix/sasl/smtpd.conf
However, I cannot for the life of me figure out how to have ...
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Zimbra inbox unable to receive emails from other servers
I have setup a zimbra server on an ubuntu VM, opened up the necessary ports according to this tutorial.
I am able to receive emails from gmail or outlook using other email domains.
However, no emails ...
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Is it possible to connect to remote 465 via own 443 port?
I have asked this question and am opening a new question as per SE policy.
The remote SMTP server can be connected to via its own 465 port.
However, I want to reach that server via a cloud server. ...
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Piping commands to smtp server doesn't work
So I was trying to write a bash script to send a mail to someone using smtp.gmail.com server by using openssl.
Everything upto this is working fine:
printf "helo gmail.com\nauth plain $auth\n&...
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exim4 different passwd.client for different sender or router
I am using exim4 with a couple of smarthosts to send email from my private mail server. I have a default smarthost, but I also use official SMTP relays for accounts using senders from domains handled ...
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How do you change Amazon SES access key for SMTP client / Microsoft Outlook?
I was trying to change my outbound SMTP password (after the LastPass breach). I set it up a while back using Amazon SES but now working with this sucker is anything but easy.
So I logged in to the ...
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Does email you send or reply to contain privacy information that spammers could use?
I have received a few emails recently that seem like spam but they are asking about open source projects I've worked on and gmail didn't flag them as spam.
When I email or reply to an email does ...
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How long should I wait before fetching the "SENT" mailbox after sending an e-mail?
I have made my e-mail client immediately fetch new e-mails from the IMAP server (only opening the "Sent"/"Sent mail" mailbox) right after a new e-mail has been sent.
To my (slight) ...
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Scan to mail with Exchange Online/Office365
A year ago we've migrated from an on-premise IT environment to a Cloud based one, using Office365 and Azure. E-mail has been migrated to Exchange Online.
We have a couple of scanners (MFP) that need ...
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How to send email with thunderbird without configuring an incoming email service
I'd like to set up thunderbird for outgoing email only. I have no incoming email service I want to use with thunderbird.
I set up an outgoing email connection through account settings, but when I go ...
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exim mail server send receive ipv6
IPv4 mail is working fine with DKIM, SPF, etc. I can send to Gmail no problem and all validations pass. Hotmail/Outlook also work after doing validation with them.
I can send IPv6 mail through my ...
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Config SMTP of office365 for another connected email
I have an account at office365 and connected another email to it. For example:
test1@hotmail.com
test1@gmail.com --> can log in to Hotmail via this email
Each of them works fine with their SMTP ...
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Search Application Log for string based on timeframe with PowerShell
UPDATED 10.11.2022
I added the timeframe parameters, but I'm getting an error message for an empty body. How do I prevent this?
This is my current script:
$Subject = "EventLogAlert {0:yyyy-MM-dd ...
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What are potential problems when sending emails with a different "from" than actually authenticated to SMTP? [closed]
I am building an app where customers can send emails. In order to make that work I have an account to a SMTP server with my own domain just to send emails.
I want my own email to be unknown so when ...
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How does SMTP servers authenticate to each other
As a regular user, to send email through a SMTP server, e.g. gmail, I need to authenticate.
However when gmail send an email received from its user, to a different domain, e.g. outloom.com, it also ...
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Using different SMTP server in Outlook sends email with wrong address in header
I've exclusively used Linux for almost 30 years now, but my wife is on Windows 10 with Outlook 2019 and today it's brought me close to hurling her laptop out the window.
The situation: I need to set ...
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how would mail sending and retrieval work with SMTP and IMAP when both protocols have their own dedicated servers
How would a mail server be able to have a separate SMTP server and IMAP server, thus not have them both in one server?
I don't get how that'd work if possible.
I mean imagine if I'd (user@gmail.com) ...
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Unable to send email from APC UPS PowerChute
I have the APC 1500 Smart UPS with SmartConnect and the PowerChute Business Edition server edition 9.2 Build 604. I had configured the email to use Gmail to send me notifications when there were any ...
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Is our mail server's reverse DNS properly configured?
The Mail Genius e-mail checker claims that our mail server Reverse DNS is not properly configured because our mail server IP does not resolve to our mail server domain. Is this perhaps because the ...
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Exim SMTP server, reroute message based on Subject line (reroute to different SMTP)
I have a IMAP/SMTP server (exim) that is running fine.
I connect several client applications to this (think Outloook desktop and the like).
What I would like to do is route some of the emails to a ...
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Office 365 email(s) no longer available through POP3
I am hoping this question relates to some kind of outage that will be resolved.
I am using this dialog to retreive messages from outlook 365.
I have been through every setting I can find, and from ...
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Mutt, SMTP and automated email sending with new Gmail regulations
I have been using MUTT (SMTP protocols) to automatically send email from a Gmail account. Since May 30th 2022, it seems that Google does not support SMTP protocols for whatever security reasons, and ...
SuperLeo
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Postfix 3.6.2-1 on CentOS 7: 554 5.7.1 Relay access denied
I'm trying to set up a postfix 3.6.2-1 server on CentOS 7 that I don't have physical access to (have sudo, but upgrading everything is not an option) and needs client & relay clearance from my ...
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How does Google SMTP work?
I am performing malware analysis on a piece of malware which sends emails. The malware contains some hardcoded email addresses. It uses Google SMTP to send emails and I am not sure how it works
...
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Ubuntu, IPv6, multihome, e-mail, source selection. Arghhh
I've been hosting my e-mail forever, and have been also using IPv6 via 6o4 (HE) for some time. Here (South America) IPv6 has been slow in acceptance, so to say, so everything went fine until now. Now ...
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Alternative way to Interact with Microsoft Office 365 server
My workplace has an Microsoft Office 365 and an "Outlook only" design philosophy wrt e-mail clients. As a long-standing user of emacs and mu I find the idea of using Outlook unbearable.
I ...
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Google bounce email with error 550-5.7.1 Our system has detected that this message is likely unsolicited mail
I have a forward configuration in my Exim4 server, when it receives a message to a particular address, it is forwarded to a gmail account.
Exim4 is configured with a valid DKIM and SPF authentication ...
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Why can't I send email from Thunderbird using an office365 account?
I have been struggling to set up Thunderbird to use an office365 account. Receiving was fine, as was managing my mailbox, but it simply refused to send, despite having all of the right settings:
smtp....
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How to get Postfix and Dovecot working with an existing Kerberos realm?
I now have a Kerberos realm like MYDOMAIN.CH, an admin server and a principal of root/admin, as well as the realm master password and the root/admin principal password. Now I want to get Kerberos ...
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Outgoing emails are not signing with DKIM
I have set up Postfix and OpenDKIM and I am trying to get outgoing emails signed by DKIM so that providers won't mark it as spam.
However, even if I believe I set up the signing properly, none of the ...
user1678307
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Outlook send only account
How can I set up a send-only account in Outlook 356 (on Windows)?
I only have SMTP login information. There is simply no IMAP/POP3 server to log in to.
I've tried this: https://nolongerset.com/send-...
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Two-piece mail server, working out sender_login and verified_recipient validation
TL:DR I'm trying to figure out how to get one postfix server to ask another whether a incoming email's recipient address is valid, or if an outgoing email's sender address is a valid email/alias for ...
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Possible to configure my VPS as a proxy of mail sent by another mail server?
I have a NAS which deployed with a full-featured mail server, but I cannot send mail to most of the other mailboxes because its IP is always blocked from sending mail, and the mail sent will be ...
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Possible to host a SMTP relay on Linux?
Let's make it brief. I have a NAS with mail server on it and a VPS, but I cannot send mail directly because the IP of the NAS is defaulty rejected by all, any mail sent will be returned.
But the IP of ...
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How to set up local mail on AWS linux 2
ISTR that in the old days, on most unix boxes you could just mail someone ... and it pretty much just worked. I have a pretty decent understanding of how mail servers work, but ... it turns out I don'...
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Outlook Exchange account view raw NDR report
Office 365 / Outlook I am interested in viewing the raw NDR report from a bounced message. The NDR from postmaster seems to be a special type of email, or Outlook is treating it differently. The NDR ...
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Unable to telnet to 127.0.0.1 (local Linux VM) to test SMTP port 25
I have the latest Kali Linux running on Hyper-V as a VM:
Sendmail is installed (testing email server)
Domain name purchased, say AlphaMoon.org with MX record pointing to my ISP IP address
Netstat ...
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SMTP always fail on first attempt
I tried PowerShell to test SMTP, but the first attempt or first few attempts will always fail and receive the same error
Send-MailMessage : Unable to read data from the transport connection: ...
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Outlook password encoding for email services (IMAP, SMTP)
I’m trying to make sense of how different mail clients log onto IMAP and SMTP
services. There are the normal ones and then there is Outlook.
Outlook seems to unconditionally encode passwords as Latin-...
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Can't send mails as root with Mutt through MSTP
I successfully set up Mutt and SMPT to send to myself some logs through emails.
As user, it works perfectly
However, when I ask through sudo crontab -e as root to send some logs after running some ...
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POP3 + Mail client = no new messages on server (despite having new messages on server)
I'm using Thunderbird. I've used it forever. Today I noticed mail wasn't being delivered for about 2 days; after checking the usual suspects and confirming I see new mail in my server account's /var/...
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Office365 SMTP server extremely slow from Thunderbird on Linux
I've been using Thunderbird on Linux to access the Office365 email account of my company. Starting from last week, connections suddenly became extremely slow. I regularly wait for 3 to 5 minutes ...
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Send a MIME Email with PUTTY
Im currently wondering how to send a mime mail with putty, important is, for now i only want to "declare" the mail as a mime mail if thats possible. I dont want to send an actual picture,...
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How to interpret specific SMTP responses
I've been having a terrible problem sending emails from a godadddy shared-hosting (CPANEL) email account to any email account hosted by Network Solutions. I have spent hours on the phone with ...
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SMTP server to redirect to another SMTP server
I'm trying to make it so I can send emails using my student email address from my primary email account. My school has set up a SMTP server we can use. However, my primary email account is Protonmail ...
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Postfix not sending to gmail [added spf & dkim]
Hello i've been struggling for a while now. I will give all the details i can.
OS: Ubuntu 20.04
Server: DigitalOcean (Droplet)
Domain Registrar: Namecheap
I hope i did not change up somethings with ...
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Postfix: inbound and outbound relay with store and forward - advice needed
My ISP blocks port 25, so I'd like to setup a store and forward inbound and outbound postfix server (relay-server) that communicates with a mailstore server (mailstore-server), which is unable to ...
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Telnet port 587
Our IIS hosted system sends Email through an account example@ieu-iq.org. Sometime ago, my ISP blocked port 25 so it stopped sending, talking to my email provider GoDaddy, they said I can use port 587. ...
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Run Mercury on Xampp portable
I do use xampp-portable-windows-x64-8.0.3-0-VS16. But Mercury was disabled and \xampp\MercuryMail\ folder was empty. So I copied files from install version and enabled Mercury in xampp-controll.ini. ...
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