Sending Email Problems with Multiple ISPs: Can Someone Help?

In summary, the conversation discusses the issue of not being able to send emails from a POP3 email account when using a different internet connection. The speaker speculates that either their friend's internet connection has a blocked port or their own connection needs to be through their ISP for SMTP to work. They also mention having experienced the same problem with multiple ISPs in the past. Another person in the conversation explains that this is a common practice for ISPs to prevent spam, and suggests using the webmail option or a paid SMTP server service instead. The original speaker is relieved to have a solution and is willing to use alternative methods to send emails if it helps prevent spam.
  • #1
FulhamFan3
134
0
I have a POP3 email account. I have a laptop and receiving email is no problem for me where ever I go. However sending email is. When I send my email from home I have no problems. But when I go to a friend's house and use their connection it fails to connect to the SMTP server. From this I can only guess two things. Either my friend has some port blocked that SMTP needs or my connection needs to be through my ISP for SMTP to work. The blocked port makes more sense to me on it's face however I doubt all my friends have this port blocked

I noticed this same problem when I had two ISP at home a long time ago. I had AOL and Netzero. When receiving POP3 mail I had no problems. However sending mail from my @netzero.com account was only possible when I connected to netzero.

Can someone clear this up for me?
 
Computer science news on Phys.org
  • #2
FulhamFan3 said:
I have a POP3 email account. I have a laptop and receiving email is no problem for me where ever I go. However sending email is. When I send my email from home I have no problems. But when I go to a friend's house and use their connection it fails to connect to the SMTP server. From this I can only guess two things. Either my friend has some port blocked that SMTP needs or my connection needs to be through my ISP for SMTP to work. The blocked port makes more sense to me on it's face however I doubt all my friends have this port blocked

I noticed this same problem when I had two ISP at home a long time ago. I had AOL and Netzero. When receiving POP3 mail I had no problems. However sending mail from my @netzero.com account was only possible when I connected to netzero.

Can someone clear this up for me?

It's typical of most ISPs to allow SMTP access to their netblocks only. This would explain why you can only use your ISPs SMTP server when you use their Internet connection.

What you're trying to do is called `relaying.' Normally, if you were on your ISP's netblock, this wouldn't be a bad thing; however, limiting SMTP access to their netblocks only, prevents spam.
 
  • #3
Also, if your ISP has any sort of webmail, this would allow you to send/receive emails through their SMTP/POP3/IMAP servers. The only downside is that you wouldn't be able to use the email client that you typically use.
 
  • #4
Thanks. At least I know what the problem is now. I can send email from the same address but from the web instead. It's just annoying to compose email on my fancy program and not be able to use it. But if it cuts down on spam than I'm ok with it.
 
  • #5
Except identifying, the problems are supposed to be resolved :) I am using smtp server from http://smtp.com, for a few bucks per month I was able to set my outbound at laptop and configure iPhone to their server as well.
 

1. Why am I unable to send emails from different ISPs?

There could be a few reasons why you are experiencing difficulties sending emails from multiple ISPs. One possible reason could be that your email account has been flagged for suspicious activity by one or more ISPs. Another reason could be that there are technical issues with the ISPs' servers or networks. Additionally, it's possible that your email settings are not properly configured for each ISP.

2. How can I troubleshoot this problem?

The first step in troubleshooting this issue is to check if your email account has been flagged for suspicious activity. Contact your email provider to verify and resolve any potential issues. Next, make sure that your email settings are correctly configured for each ISP. You can also try sending emails from a different device to see if the problem persists. If none of these steps resolve the issue, it's best to contact the ISPs directly for further assistance.

3. Can using multiple ISPs cause email sending problems?

In most cases, using multiple ISPs should not cause any problems with sending emails. However, if your email account has been flagged for suspicious activity, using multiple ISPs may exacerbate the issue. Additionally, if your email settings are not properly configured, this could lead to difficulties sending emails from different ISPs.

4. Is there a way to prevent this problem from happening in the future?

To prevent email sending problems with multiple ISPs, it's important to regularly review and update your email settings for each ISP. Additionally, make sure to use strong and unique passwords for your email accounts to prevent potential security breaches. If you continue to experience difficulties, consider using a reliable email service provider that can handle multiple ISPs.

5. Can someone help me resolve this issue?

If you are unable to troubleshoot and resolve the email sending problem with multiple ISPs on your own, it's best to contact the ISPs directly for assistance. They may be able to provide specific steps to resolve the issue or identify any potential problems on their end. You can also reach out to a tech support specialist or your email service provider for additional help.

Similar threads

Asked to Verify email when Unsubscribing from unsolicited e-mails
    • Computing and Technology
Replies
12
Views
2K
Suspicious & Threatening Emails: How to Stop It?
    • Computing and Technology
Replies
14
Views
1K
Anyone Getting "Realistic" Fake Emails?
    • Computing and Technology
2
Replies
67
Views
6K
Using Word for Equation Editing
    • Computing and Technology
Replies
15
Views
1K
POP3 & SMTP Protocols: Answers to Common Questions
    • Computing and Technology
Replies
7
Views
3K
Java JavaFX layout not updating and email sending optimization problem
    • Programming and Computer Science
Replies
1
Views
791
Emotet Trojan without Outlook?
    • Computing and Technology
Replies
6
Views
1K
Best practice for using GIT on a shared lab computer?
    • Computing and Technology
Replies
20
Views
2K
Alternative Email Services to Gmail
    • General Discussion
Replies
5
Views
1K
MODEM Question -- Can a factory reset & re-register clear up intermittent drops?
    • Computing and Technology
Replies
8
Views
2K

Hot Threads

Recent Insights

Back
Top