×

Switch Account

SMTP port 25 blocked

Reply
Highlighted
Copper Contributor
Copper Contributor
Posts: 5
Registered: ‎01-26-2009

SMTP port 25 blocked

Message 1 of 6
(26,565 Views)

When I'm home everything works fine using Apple Mail to send/receive from my verizon.net email account.

At my workplace, I can receive mail but not send it; I think port 25 is blocked.  Anyone know if Verizon offers outgoing mail service via alternative smtp ports and what they are? 

5 REPLIES 5
Highlighted
Employee Emeritus Employee Emeritus
Employee Emeritus
Posts: 895
Registered: ‎12-01-2008

Re: SMTP port 25 blocked

Message 2 of 6
(26,377 Views)

I've heard of this issue before with iPhones and other Apple devices, double check the below settings:

 

Incoming Mail Server (POP):
-- Host Name: incoming.verizon.net
-- User Name [username without the @verizon.net]
-- Password: [password]

Outgoing Mail Server (SMTP):
-- host name: outgoing.verizon.net
-- user name: [username without the @verizon.net]
-- password: [password]

Advanced (this is I think what did the trick):
-- (Incoming and Outgoing) Use SSL: OFF
-- Incoming Authentication: MD5 Challenge Response
-- Outgoing Authentication: Password
-- Incoming Server Port: 110
-- Outgoing Server Port: 25

Nickel Contributor
Nickel Contributor
Posts: 37
Registered: ‎01-14-2009

Re: SMTP port 25 blocked

Message 3 of 6
(26,358 Views)
Sir I would also like to Add,  it maybe possible that your Work ISP (Internet Service Provider) Maybe Blocking their port 25 from public use for they may be managing their own network email (Example, outlook, Lotus etc).   This could also explain why you can send at home but not from work
Highlighted
Copper Contributor
Copper Contributor
Posts: 5
Registered: ‎01-26-2009

Re: SMTP port 25 blocked

Message 4 of 6
(26,331 Views)

Thanks for your reply.

The settings are now as you specified but still nothing going in OR out, while at work.

Incidentally, I thought the incoming server was mail.verizon.net rather than incoming.verizon.net.

I had the incoming authentication set to APOP which worked at home; neither that setting nor MD5 challenge-response works at work.

It seems they also block port 110 which prevents all incoming mail!  

As you can see, I am trying hard not to have to rely on Verizon's webmail application. 

Highlighted
Copper Contributor
Copper Contributor
Posts: 5
Registered: ‎01-26-2009

Re: SMTP port 25 blocked

Message 5 of 6
(26,332 Views)

Thank you for your response.  I now note also that port 110 is blocked by my workplace network, which prevents all incoming mail via Apple Mail 3.0.

As you can see I am trying not to have to use Verizon Webmail. 

Highlighted
Platinum Contributor III
Platinum Contributor III
Posts: 6,819
Registered: ‎08-23-2008

Re: SMTP port 25 blocked

Message 6 of 6
(26,352 Views)

@DoctorBill wrote:

When I'm home everything works fine using Apple Mail to send/receive from my verizon.net email account.

At my workplace, I can receive mail but not send it; I think port 25 is blocked.  Anyone know if Verizon offers outgoing mail service via alternative smtp ports and what they are? 


 

I know the network where I work blocks many ports. I use the Verizon Webmail while at work. Then my mail client at home can download it and clear the Verizon server mailbox.

 

http://webmail.verizon.net/signin/

How-To Videos
 
The following videos were produced by users like you!
   
Videos are subject to the Verizon Fios Community Terms of Service and User Guidelines and contains content that is not created by Verizon.
Covid19


Browse Categories
Categories:
Posts

Verizon Troubleshooters
Unable to find your answer here? Try searching Verizon Troubleshooters for more options.