pop3

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Office 2021 Outlook profile email account settings - server names have appended a "." to the name.
Over the past several years, a recurring issue arises where for some unknown reason, the email account settings where I define the POP server (pop3.comcast.net), gets an extra "." added to the name (i.e. pop3.comcast.net.) This seems to cause Xfinity's email servers to perceive my IP address as a SPAM source and they in turn block my address from using their SMTP server for outbound mail. Interestingly, they continue to let me retrieve incoming via POP but not send via SMTP. The reason I say this is recurring is when it's happened in the past, it was easy enough to just delete that superfluous dot at the end of the name and after 24 hours, Xfinity would unblock my IP and all would be good again. Might not happen again for a year but when it does, I repeat these steps. Earlier this week however when it did occur again, there's a difference. Now when I delete that extra dot, Outlook is refusing to save the entry with it missing and so Outlook on my PC is annoying Xfinity continuously and the blocks are lasting longer and longer from them. I hope they don't become permanent! So that's how this is affecting me, and this brings me to my TWO questions: Why does this keep happening? How can I fix this in Outlook so the proper server names are presented to Xfinity? I did an extensive investigation and repair exercise using CoPilot's AI guidance. Many, many hours of try this, try that, all to no avail. It basically confirmed that the problem wasn't in my configuration and efforts to override what it thought Outlook was doing that might be causing the append, all failed. It wanted me to open a case with Microsoft but as "just" a consumer, there's no way to do so. I did provide feedback within Outlook but that's generated nothing so far. This is so impactful to our family, I really hope there's something someone knows to do. Thank you! Jonathan
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jeburnett
Jul 30, 2025 Place Outlook
84Views
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2Comments
Exchange Pop3 LIST not showing all mails
Hello community, anybody got an idea for following problem: We have a exchange 2016 CU23, pop3 is enabled. When I try pop3 over telnet and issue a list command, no mails are displays. When I enter the same mailbox via owa, i can see multiple mails. Any idea? I cant fetch those mails via pop3. The strange thing: This only happens to ~2 out of 50 Mails, which a correctly fetched. I can't find any difference in those mails. When i save the mail as .eml and import it in the mailbox back, I can fetch it via pop3. br Chris
chrisstain2280
Dec 15, 2023 Place Exchange
367Views
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Exchange Online Pop3 Connectivity Issue
Hello, I have a user with an Exchange Online email inbox through GoDaddy and they are unable to set up access to their email via POP3. Their credentials are correct and we are using the mail servers specified by the web access portal. I have disabled modern authentication and made sure Pop is enabled on the mailbox. Has anyone else experienced this same issue and does anyone have a fix? Thank you, Jaron
JaronScion
Feb 10, 2022 Place Exchange
526Views
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Sorting mail from Exchange mailbox with POP3
Hi everyone, I have a problem that I hope you can help me solve it, I have an account with an external supplier with exchange 2010 where my company connects only with POP3 (unfortunately) to read mail and sort it through Outlook rules. This account has a space limit and also we talk about a flow of thousands of mails per day so we are forced to download , delete it from the server and through numerous rules on Outlook (more than 70) sort them accordingly. The problem is that the PST quickly reaches 100Gbytes and becomes unmanageable. I thought of using an Exchange server of our property as a connector to download the mail but then it will still be sorted and archived regularly. Do you have any solution in mind? thank you so much!
andrew87
Sep 15, 2020 Place Exchange
1.3KViews
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3Comments
How to configure Outlook for POP3/IMAP and SMTP Connectivity in SBS 2008/2011 Standard
First published on TechNet on Aug 31, 2011 [Today's post comes to us courtesy of Shawn Sullivan from Commercial Technical Support]If you wish to connect to your Exchange mailbox on SBS with a remote Outlook client, we recommend that you use Outlook Anywhere.
sbs-team
Apr 04, 2019 Place Windows Server Essentials and Small Business Server
6.3KViews
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