All Questions
1,007
questions
7
votes
1
answer
903
views
Why do certificate CNs not match the hostnames provided in MX records?
I'm the author of checkdmarc, an open source CLI tool for checking DMARC and other email security standards. One of those checks involves testing if the mail servers listed in a domain's MX records ...
- 361
0
votes
0
answers
15
views
send email using multiple domain emails using main domain postfix smtp server
I have a domain with postfix for SMTP server, eg EM-NAME.DOMAINNAME.COM
We are sending emails in bulk from domain email [email protected]
I am trying to send emails on behalf of my ...
-1
votes
0
answers
40
views
Attempting to set up an exim4 SMTP only server that can send out messages from two domains
I am attempting to set a STMP server that can send out messages from two different domains
Adding this line to the the config file (update-exim4.conf.conf)
PRIMARY_HOSTNAME = $sender_address_domain
...
- 1
-3
votes
1
answer
66
views
Gitlab SMTP Configuration
I am new to Gitlab. I configure SMTP in Gitlab that looks like,
{:authentication=>:login,
:user_name=>"My Email",
:password=>"Email ...
1
vote
2
answers
97
views
Abuse of Abuse reporting system / Feedback loop by spfbl.net
We are getting below abuse emails from Abuse reporting system / Feedback loop by spfbl.net
Can someone explain how are these even valid Abuse emails in any sense at all, because they are clearly being ...
- 19
0
votes
2
answers
300
views
554 5.7.1 Relay access denied - cant send mails
I tried to upgrade debian from 10 to 11 and the everything got messed up. Im trying to fix postfix. I can receive emails but cant send. I get the error "554 5.7.1 Relay access denied"
My ...
- 11
1
vote
0
answers
95
views
How can I make MIAB automatically copy all mail sent via SMTP into the sent folder of the sender's account?
I run Mail-In-A-Box on my mail server and one of my clients is using a specialized application to send messages via SMTP from their account on my server. When they used their own Gmail account to send ...
- 11
0
votes
3
answers
273
views
Postfix sending duplicate emails under different userid's, how to fix?
I can't find a reason for it in the postfix settings, but duplicate emails are being sent, under different uid's. Looking at the email headers, they have unique ids, and each with a different Postfix, ...
- 111
1
vote
2
answers
58
views
Cannot get Exim to verify DANE for remote smtp
I am trying to configure Exim to try DANE before deciding to deliver unencrypted mail to remote hosts.
My general Exim configuration has: dns_dnssec_ok = 1.
For the dnslookup router: ...
- 75
0
votes
1
answer
53
views
How to send email from smtp server1 to smtp server2 (Postfix) via client?
How to make server1 with postfix can send email to server2 with postfix by redirecting DNS query to it (type forward). These servers are on the same local network. Server1 is to receive a non-...
- 1
-1
votes
1
answer
98
views
Why Google SMTP MTA's are not sending STARTTLS command
I'm a software engineer that wrote my own SMTP delivery agent. I recently added the STARTTLS support to my software and I was doing some testing, when I noticed that Google's SMTP transfer agents are ...
- 681
1
vote
1
answer
267
views
Wrap plain text mail in html
we use Postfix as MTA to send our mails from our system. Unfortunately we have an old persistent system which we cannot change, which sends mails to our customers in plain text format. I would like to ...
- 15
0
votes
0
answers
115
views
SharePoint SE not able to send automated emails
I have configured in SharePoint Administration the outgoing emails to an SMTP Server on Port 25.
The SMTP Server is a default setup with anonymous authentication which is the same on SharePoint, and ...
- 145
0
votes
0
answers
226
views
Why am I getting Sasl errors when trying to authenticate to SES with Postifx?
I am getting these two errors in my mail logs:
Aug 25 22:51:23 ns1 postfix/smtpd[246267]: warning: unknown[94.156.102.101]: SASL LOGIN authentication failed: authentication failure
Aug 25 22:55:22 ns1 ...
-1
votes
2
answers
91
views
Two mail server installs (for two domains) on Windows VPS with one IP?
I'm starting with 1 IP address and the supplied mail server software license supports only 1 domain.
I'm now adding a second domain to the VPS on the same IP address. There's a LARGE increase in cost ...
